Inductive proximity sensors · M18
Non-flush (unshielded) M18 inductive proximity sensors with nickel-plated brass housings. Four sensing distances, NPN, PNP, DC 2-wire, AC and AC/DC outputs, a 2 m cable or an M12 connector, and standard or short housings: 302 part numbers, each a fixed SEGMENsensor order code.

A SEGMENsensor M18 non-flush inductive proximity sensor is an 18 mm threaded metal-detection switch whose sensing face protrudes from the housing, so it reaches further than a flush model. The SGI-GP18U family has 302 part numbers with 8, 16, 20 or 23 mm rated sensing distance and nickel-plated brass housings.
Quick answer
Non-flush (also called unshielded or non-embeddable) means the sensing face stands out from the metal housing, so it must protrude from the mounting bracket with metal-free space around it. In return it reaches further: SEGMENsensor M18 non-flush models are rated 8–23 mm, against 5–15 mm for M18 flush models.
Model finder
Filter by distance, output, supply, connection and housing length. Click Quote to add the part number to the quote form.
| Part number | Sensing distance | Output | Supply | Connection | Housing | |
|---|---|---|---|---|---|---|
| SGI-GP18U-080NA-C2 | 8 mm | NPN NO | 10–30 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-080NA-C2-K | 8 mm | NPN NO | 10–30 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-080NA-Q4 | 8 mm | NPN NO | 10–30 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-080NA-Q4-K | 8 mm | NPN NO | 10–30 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-080NA-C2-V36 | 8 mm | NPN NO | 5–36 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-080NA-C2-K-V36 | 8 mm | NPN NO | 5–36 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-080NA-Q4-V36 | 8 mm | NPN NO | 5–36 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-080NA-Q4-K-V36 | 8 mm | NPN NO | 5–36 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-080NA-C2-V55 | 8 mm | NPN NO | 10–55 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-080NA-C2-K-V55 | 8 mm | NPN NO | 10–55 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-080NA-Q4-V55 | 8 mm | NPN NO | 10–55 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-080NA-Q4-K-V55 | 8 mm | NPN NO | 10–55 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-080NB-C2 | 8 mm | NPN NC | 10–30 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-080NB-C2-K | 8 mm | NPN NC | 10–30 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-080NB-Q4 | 8 mm | NPN NC | 10–30 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-080NB-Q4-K | 8 mm | NPN NC | 10–30 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-080NB-C2-V36 | 8 mm | NPN NC | 5–36 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-080NB-C2-K-V36 | 8 mm | NPN NC | 5–36 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-080NB-Q4-V36 | 8 mm | NPN NC | 5–36 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-080NB-Q4-K-V36 | 8 mm | NPN NC | 5–36 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-080NB-C2-V55 | 8 mm | NPN NC | 10–55 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-080NB-C2-K-V55 | 8 mm | NPN NC | 10–55 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-080NB-Q4-V55 | 8 mm | NPN NC | 10–55 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-080NB-Q4-K-V55 | 8 mm | NPN NC | 10–55 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-080NC-C2 | 8 mm | NPN NO + NC | 10–30 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-080NC-C2-K | 8 mm | NPN NO + NC | 10–30 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-080NC-Q4 | 8 mm | NPN NO + NC | 10–30 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-080NC-Q4-K | 8 mm | NPN NO + NC | 10–30 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-080NC-C2-V36 | 8 mm | NPN NO + NC | 5–36 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-080NC-C2-K-V36 | 8 mm | NPN NO + NC | 5–36 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-080NC-Q4-V36 | 8 mm | NPN NO + NC | 5–36 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-080NC-Q4-K-V36 | 8 mm | NPN NO + NC | 5–36 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-080PA-C2 | 8 mm | PNP NO | 10–30 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-080PA-C2-K | 8 mm | PNP NO | 10–30 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-080PA-Q4 | 8 mm | PNP NO | 10–30 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-080PA-Q4-K | 8 mm | PNP NO | 10–30 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-080PA-C2-V36 | 8 mm | PNP NO | 5–36 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-080PA-C2-K-V36 | 8 mm | PNP NO | 5–36 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-080PA-Q4-V36 | 8 mm | PNP NO | 5–36 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-080PA-Q4-K-V36 | 8 mm | PNP NO | 5–36 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-080PA-C2-V55 | 8 mm | PNP NO | 10–55 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-080PA-C2-K-V55 | 8 mm | PNP NO | 10–55 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-080PA-Q4-V55 | 8 mm | PNP NO | 10–55 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-080PA-Q4-K-V55 | 8 mm | PNP NO | 10–55 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-080PB-C2 | 8 mm | PNP NC | 10–30 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-080PB-C2-K | 8 mm | PNP NC | 10–30 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-080PB-Q4 | 8 mm | PNP NC | 10–30 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-080PB-Q4-K | 8 mm | PNP NC | 10–30 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-080PB-C2-V36 | 8 mm | PNP NC | 5–36 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-080PB-C2-K-V36 | 8 mm | PNP NC | 5–36 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-080PB-Q4-V36 | 8 mm | PNP NC | 5–36 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-080PB-Q4-K-V36 | 8 mm | PNP NC | 5–36 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-080PB-C2-V55 | 8 mm | PNP NC | 10–55 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-080PB-C2-K-V55 | 8 mm | PNP NC | 10–55 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-080PB-Q4-V55 | 8 mm | PNP NC | 10–55 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-080PB-Q4-K-V55 | 8 mm | PNP NC | 10–55 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-080PC-C2 | 8 mm | PNP NO + NC | 10–30 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-080PC-C2-K | 8 mm | PNP NO + NC | 10–30 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-080PC-Q4 | 8 mm | PNP NO + NC | 10–30 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-080PC-Q4-K | 8 mm | PNP NO + NC | 10–30 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-080PC-C2-V36 | 8 mm | PNP NO + NC | 5–36 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-080PC-C2-K-V36 | 8 mm | PNP NO + NC | 5–36 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-080PC-Q4-V36 | 8 mm | PNP NO + NC | 5–36 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-080PC-Q4-K-V36 | 8 mm | PNP NO + NC | 5–36 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-080DA-C2 | 8 mm | DC 2-wire NO | 10–60 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-080DA-C2-K | 8 mm | DC 2-wire NO | 10–60 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-080DA-Q4 | 8 mm | DC 2-wire NO | 10–60 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-080DA-Q4-K | 8 mm | DC 2-wire NO | 10–60 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-080DB-C2 | 8 mm | DC 2-wire NC | 10–60 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-080DB-C2-K | 8 mm | DC 2-wire NC | 10–60 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-080DB-Q4 | 8 mm | DC 2-wire NC | 10–60 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-080DB-Q4-K | 8 mm | DC 2-wire NC | 10–60 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-080JA-C2-K | 8 mm | AC 2-wire NO | 20–250 V AC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-080JB-C2-K | 8 mm | AC 2-wire NC | 20–250 V AC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-080UA-C2-3W | 8 mm | AC/DC NO | 20–250 V AC/DC | 2 m cable (3-wire) | Standard | Quote |
| SGI-GP18U-080UA-C2-K-3W | 8 mm | AC/DC NO | 20–250 V AC/DC | 2 m cable (3-wire) | Short (K) | Quote |
| SGI-GP18U-080UA-Q4 | 8 mm | AC/DC NO | 20–250 V AC/DC | M12 connector | Standard | Quote |
| SGI-GP18U-080UB-C2-3W | 8 mm | AC/DC NC | 20–250 V AC/DC | 2 m cable (3-wire) | Standard | Quote |
| SGI-GP18U-080UB-C2-K-3W | 8 mm | AC/DC NC | 20–250 V AC/DC | 2 m cable (3-wire) | Short (K) | Quote |
| SGI-GP18U-080UB-Q4 | 8 mm | AC/DC NC | 20–250 V AC/DC | M12 connector | Standard | Quote |
| SGI-GP18U-160NA-C2 | 16 mm | NPN NO | 10–30 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-160NA-C2-K | 16 mm | NPN NO | 10–30 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-160NA-Q4 | 16 mm | NPN NO | 10–30 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-160NA-Q4-K | 16 mm | NPN NO | 10–30 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-160NA-C2-V36 | 16 mm | NPN NO | 5–36 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-160NA-C2-K-V36 | 16 mm | NPN NO | 5–36 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-160NA-Q4-V36 | 16 mm | NPN NO | 5–36 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-160NA-Q4-K-V36 | 16 mm | NPN NO | 5–36 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-160NA-C2-V55 | 16 mm | NPN NO | 10–55 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-160NA-C2-K-V55 | 16 mm | NPN NO | 10–55 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-160NA-Q4-V55 | 16 mm | NPN NO | 10–55 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-160NA-Q4-K-V55 | 16 mm | NPN NO | 10–55 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-160NB-C2 | 16 mm | NPN NC | 10–30 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-160NB-C2-K | 16 mm | NPN NC | 10–30 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-160NB-Q4 | 16 mm | NPN NC | 10–30 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-160NB-Q4-K | 16 mm | NPN NC | 10–30 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-160NB-C2-V36 | 16 mm | NPN NC | 5–36 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-160NB-C2-K-V36 | 16 mm | NPN NC | 5–36 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-160NB-Q4-V36 | 16 mm | NPN NC | 5–36 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-160NB-Q4-K-V36 | 16 mm | NPN NC | 5–36 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-160NB-C2-V55 | 16 mm | NPN NC | 10–55 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-160NB-C2-K-V55 | 16 mm | NPN NC | 10–55 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-160NB-Q4-V55 | 16 mm | NPN NC | 10–55 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-160NB-Q4-K-V55 | 16 mm | NPN NC | 10–55 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-160NC-C2 | 16 mm | NPN NO + NC | 10–30 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-160NC-C2-K | 16 mm | NPN NO + NC | 10–30 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-160NC-Q4 | 16 mm | NPN NO + NC | 10–30 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-160NC-Q4-K | 16 mm | NPN NO + NC | 10–30 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-160NC-C2-V36 | 16 mm | NPN NO + NC | 5–36 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-160NC-C2-K-V36 | 16 mm | NPN NO + NC | 5–36 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-160NC-Q4-V36 | 16 mm | NPN NO + NC | 5–36 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-160NC-Q4-K-V36 | 16 mm | NPN NO + NC | 5–36 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-160PA-C2 | 16 mm | PNP NO | 10–30 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-160PA-C2-K | 16 mm | PNP NO | 10–30 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-160PA-Q4 | 16 mm | PNP NO | 10–30 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-160PA-Q4-K | 16 mm | PNP NO | 10–30 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-160PA-C2-V36 | 16 mm | PNP NO | 5–36 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-160PA-C2-K-V36 | 16 mm | PNP NO | 5–36 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-160PA-Q4-V36 | 16 mm | PNP NO | 5–36 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-160PA-Q4-K-V36 | 16 mm | PNP NO | 5–36 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-160PA-C2-V55 | 16 mm | PNP NO | 10–55 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-160PA-C2-K-V55 | 16 mm | PNP NO | 10–55 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-160PA-Q4-V55 | 16 mm | PNP NO | 10–55 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-160PA-Q4-K-V55 | 16 mm | PNP NO | 10–55 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-160PB-C2 | 16 mm | PNP NC | 10–30 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-160PB-C2-K | 16 mm | PNP NC | 10–30 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-160PB-Q4 | 16 mm | PNP NC | 10–30 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-160PB-Q4-K | 16 mm | PNP NC | 10–30 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-160PB-C2-V36 | 16 mm | PNP NC | 5–36 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-160PB-C2-K-V36 | 16 mm | PNP NC | 5–36 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-160PB-Q4-V36 | 16 mm | PNP NC | 5–36 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-160PB-Q4-K-V36 | 16 mm | PNP NC | 5–36 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-160PB-C2-V55 | 16 mm | PNP NC | 10–55 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-160PB-C2-K-V55 | 16 mm | PNP NC | 10–55 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-160PB-Q4-V55 | 16 mm | PNP NC | 10–55 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-160PB-Q4-K-V55 | 16 mm | PNP NC | 10–55 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-160PC-C2 | 16 mm | PNP NO + NC | 10–30 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-160PC-C2-K | 16 mm | PNP NO + NC | 10–30 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-160PC-Q4 | 16 mm | PNP NO + NC | 10–30 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-160PC-Q4-K | 16 mm | PNP NO + NC | 10–30 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-160PC-C2-V36 | 16 mm | PNP NO + NC | 5–36 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-160PC-C2-K-V36 | 16 mm | PNP NO + NC | 5–36 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-160PC-Q4-V36 | 16 mm | PNP NO + NC | 5–36 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-160PC-Q4-K-V36 | 16 mm | PNP NO + NC | 5–36 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-160DA-C2 | 16 mm | DC 2-wire NO | 10–60 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-160DA-C2-K | 16 mm | DC 2-wire NO | 10–60 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-160DA-Q4 | 16 mm | DC 2-wire NO | 10–60 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-160DA-Q4-K | 16 mm | DC 2-wire NO | 10–60 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-160DB-C2 | 16 mm | DC 2-wire NC | 10–60 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-160DB-C2-K | 16 mm | DC 2-wire NC | 10–60 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-160DB-Q4-K | 16 mm | DC 2-wire NC | 10–60 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-160JA-C2-K | 16 mm | AC 2-wire NO | 20–250 V AC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-160JB-C2-K | 16 mm | AC 2-wire NC | 20–250 V AC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-160UA-C2-3W | 16 mm | AC/DC NO | 20–250 V AC/DC | 2 m cable (3-wire) | Standard | Quote |
| SGI-GP18U-160UA-C2-K-3W | 16 mm | AC/DC NO | 20–250 V AC/DC | 2 m cable (3-wire) | Short (K) | Quote |
| SGI-GP18U-160UA-Q4 | 16 mm | AC/DC NO | 20–250 V AC/DC | M12 connector | Standard | Quote |
| SGI-GP18U-160UB-C2-3W | 16 mm | AC/DC NC | 20–250 V AC/DC | 2 m cable (3-wire) | Standard | Quote |
| SGI-GP18U-160UB-C2-K-3W | 16 mm | AC/DC NC | 20–250 V AC/DC | 2 m cable (3-wire) | Short (K) | Quote |
| SGI-GP18U-160UB-Q4 | 16 mm | AC/DC NC | 20–250 V AC/DC | M12 connector | Standard | Quote |
| SGI-GP18U-200NA-C2 | 20 mm | NPN NO | 10–30 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-200NA-C2-K-PL | 20 mm | NPN NO | 10–30 V DC | 2 m cable | Short (K), PBT | Quote |
| SGI-GP18U-200NA-Q4 | 20 mm | NPN NO | 10–30 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-200NA-Q4-K | 20 mm | NPN NO | 10–30 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-200NA-C2-V36 | 20 mm | NPN NO | 5–36 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-200NA-C2-K-V36 | 20 mm | NPN NO | 5–36 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-200NA-Q4-V36 | 20 mm | NPN NO | 5–36 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-200NA-Q4-K-V36 | 20 mm | NPN NO | 5–36 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-200NA-C2-V55 | 20 mm | NPN NO | 10–55 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-200NA-C2-K-V55 | 20 mm | NPN NO | 10–55 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-200NA-Q4-V55 | 20 mm | NPN NO | 10–55 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-200NA-Q4-K-V55 | 20 mm | NPN NO | 10–55 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-200NB-C2 | 20 mm | NPN NC | 10–30 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-200NB-C2-K | 20 mm | NPN NC | 10–30 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-200NB-Q4 | 20 mm | NPN NC | 10–30 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-200NB-Q4-K | 20 mm | NPN NC | 10–30 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-200NB-C2-V36 | 20 mm | NPN NC | 5–36 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-200NB-C2-K-V36 | 20 mm | NPN NC | 5–36 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-200NB-Q4-V36 | 20 mm | NPN NC | 5–36 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-200NB-Q4-K-V36 | 20 mm | NPN NC | 5–36 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-200NB-C2-V55 | 20 mm | NPN NC | 10–55 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-200NB-C2-K-V55 | 20 mm | NPN NC | 10–55 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-200NB-Q4-V55 | 20 mm | NPN NC | 10–55 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-200NB-Q4-K-V55 | 20 mm | NPN NC | 10–55 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-200NC-C2 | 20 mm | NPN NO + NC | 10–30 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-200NC-C2-K | 20 mm | NPN NO + NC | 10–30 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-200NC-Q4 | 20 mm | NPN NO + NC | 10–30 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-200NC-Q4-K | 20 mm | NPN NO + NC | 10–30 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-200NC-C2-V36 | 20 mm | NPN NO + NC | 5–36 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-200NC-C2-K-V36 | 20 mm | NPN NO + NC | 5–36 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-200NC-Q4-V36 | 20 mm | NPN NO + NC | 5–36 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-200NC-Q4-K-V36 | 20 mm | NPN NO + NC | 5–36 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-200PA-C2 | 20 mm | PNP NO | 10–30 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-200PA-C2-K | 20 mm | PNP NO | 10–30 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-200PA-Q4 | 20 mm | PNP NO | 10–30 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-200PA-Q4-K | 20 mm | PNP NO | 10–30 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-200PA-C2-V36 | 20 mm | PNP NO | 5–36 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-200PA-C2-K-V36 | 20 mm | PNP NO | 5–36 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-200PA-Q4-V36 | 20 mm | PNP NO | 5–36 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-200PA-Q4-K-V36 | 20 mm | PNP NO | 5–36 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-200PA-C2-V55 | 20 mm | PNP NO | 10–55 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-200PA-C2-K-V55 | 20 mm | PNP NO | 10–55 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-200PA-Q4-V55 | 20 mm | PNP NO | 10–55 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-200PA-Q4-K-V55 | 20 mm | PNP NO | 10–55 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-200PB-C2 | 20 mm | PNP NC | 10–30 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-200PB-C2-K | 20 mm | PNP NC | 10–30 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-200PB-Q4 | 20 mm | PNP NC | 10–30 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-200PB-Q4-K | 20 mm | PNP NC | 10–30 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-200PB-C2-V36 | 20 mm | PNP NC | 5–36 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-200PB-C2-K-V36 | 20 mm | PNP NC | 5–36 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-200PB-Q4-V36 | 20 mm | PNP NC | 5–36 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-200PB-Q4-K-V36 | 20 mm | PNP NC | 5–36 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-200PB-C2-V55 | 20 mm | PNP NC | 10–55 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-200PB-C2-K-V55 | 20 mm | PNP NC | 10–55 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-200PB-Q4-V55 | 20 mm | PNP NC | 10–55 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-200PB-Q4-K-V55 | 20 mm | PNP NC | 10–55 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-200PC-C2 | 20 mm | PNP NO + NC | 10–30 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-200PC-C2-K | 20 mm | PNP NO + NC | 10–30 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-200PC-Q4 | 20 mm | PNP NO + NC | 10–30 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-200PC-Q4-K | 20 mm | PNP NO + NC | 10–30 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-200PC-C2-V36 | 20 mm | PNP NO + NC | 5–36 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-200PC-C2-K-V36 | 20 mm | PNP NO + NC | 5–36 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-200PC-Q4-V36 | 20 mm | PNP NO + NC | 5–36 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-200PC-Q4-K-V36 | 20 mm | PNP NO + NC | 5–36 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-200DA-C2 | 20 mm | DC 2-wire NO | 10–60 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-200DA-C2-K | 20 mm | DC 2-wire NO | 10–60 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-200DA-Q4 | 20 mm | DC 2-wire NO | 10–60 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-200DA-Q4-K | 20 mm | DC 2-wire NO | 10–60 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-200DB-C2 | 20 mm | DC 2-wire NC | 10–60 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-200DB-C2-K | 20 mm | DC 2-wire NC | 10–60 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-200DB-Q4 | 20 mm | DC 2-wire NC | 10–60 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-200DB-Q4-K | 20 mm | DC 2-wire NC | 10–60 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-230NA-C2 | 23 mm | NPN NO | 10–30 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-230NA-C2-K | 23 mm | NPN NO | 10–30 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-230NA-Q4 | 23 mm | NPN NO | 10–30 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-230NA-Q4-K | 23 mm | NPN NO | 10–30 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-230NA-C2-V36 | 23 mm | NPN NO | 5–36 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-230NA-C2-K-V36 | 23 mm | NPN NO | 5–36 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-230NA-Q4-V36 | 23 mm | NPN NO | 5–36 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-230NA-Q4-K-V36 | 23 mm | NPN NO | 5–36 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-230NA-C2-V55 | 23 mm | NPN NO | 10–55 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-230NA-C2-K-V55 | 23 mm | NPN NO | 10–55 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-230NA-Q4-V55 | 23 mm | NPN NO | 10–55 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-230NA-Q4-K-V55 | 23 mm | NPN NO | 10–55 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-230NB-C2 | 23 mm | NPN NC | 10–30 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-230NB-C2-K | 23 mm | NPN NC | 10–30 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-230NB-Q4 | 23 mm | NPN NC | 10–30 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-230NB-Q4-K | 23 mm | NPN NC | 10–30 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-230NB-C2-V36 | 23 mm | NPN NC | 5–36 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-230NB-C2-K-V36 | 23 mm | NPN NC | 5–36 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-230NB-Q4-V36 | 23 mm | NPN NC | 5–36 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-230NB-Q4-K-V36 | 23 mm | NPN NC | 5–36 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-230NB-C2-V55 | 23 mm | NPN NC | 10–55 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-230NB-C2-K-V55 | 23 mm | NPN NC | 10–55 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-230NB-Q4-V55 | 23 mm | NPN NC | 10–55 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-230NB-Q4-K-V55 | 23 mm | NPN NC | 10–55 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-230NC-C2 | 23 mm | NPN NO + NC | 10–30 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-230NC-C2-K | 23 mm | NPN NO + NC | 10–30 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-230NC-Q4 | 23 mm | NPN NO + NC | 10–30 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-230NC-Q4-K | 23 mm | NPN NO + NC | 10–30 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-230NC-C2-V36 | 23 mm | NPN NO + NC | 5–36 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-230NC-C2-K-V36 | 23 mm | NPN NO + NC | 5–36 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-230NC-Q4-V36 | 23 mm | NPN NO + NC | 5–36 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-230NC-Q4-K-V36 | 23 mm | NPN NO + NC | 5–36 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-230PA-C2 | 23 mm | PNP NO | 10–30 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-230PA-C2-K | 23 mm | PNP NO | 10–30 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-230PA-Q4 | 23 mm | PNP NO | 10–30 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-230PA-Q4-K | 23 mm | PNP NO | 10–30 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-230PA-C2-V36 | 23 mm | PNP NO | 5–36 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-230PA-C2-K-V36 | 23 mm | PNP NO | 5–36 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-230PA-Q4-V36 | 23 mm | PNP NO | 5–36 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-230PA-Q4-K-V36 | 23 mm | PNP NO | 5–36 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-230PA-C2-V55 | 23 mm | PNP NO | 10–55 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-230PA-C2-K-V55 | 23 mm | PNP NO | 10–55 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-230PA-Q4-V55 | 23 mm | PNP NO | 10–55 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-230PA-Q4-K-V55 | 23 mm | PNP NO | 10–55 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-230PB-C2 | 23 mm | PNP NC | 10–30 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-230PB-C2-K | 23 mm | PNP NC | 10–30 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-230PB-Q4 | 23 mm | PNP NC | 10–30 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-230PB-Q4-K | 23 mm | PNP NC | 10–30 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-230PB-C2-V36 | 23 mm | PNP NC | 5–36 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-230PB-C2-K-V36 | 23 mm | PNP NC | 5–36 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-230PB-Q4-V36 | 23 mm | PNP NC | 5–36 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-230PB-Q4-K-V36 | 23 mm | PNP NC | 5–36 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-230PB-C2-V55 | 23 mm | PNP NC | 10–55 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-230PB-C2-K-V55 | 23 mm | PNP NC | 10–55 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-230PB-Q4-V55 | 23 mm | PNP NC | 10–55 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-230PB-Q4-K-V55 | 23 mm | PNP NC | 10–55 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-230PC-C2 | 23 mm | PNP NO + NC | 10–30 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-230PC-C2-K | 23 mm | PNP NO + NC | 10–30 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-230PC-Q4 | 23 mm | PNP NO + NC | 10–30 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-230PC-Q4-K | 23 mm | PNP NO + NC | 10–30 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-230PC-C2-V36 | 23 mm | PNP NO + NC | 5–36 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-230PC-C2-K-V36 | 23 mm | PNP NO + NC | 5–36 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-230PC-Q4-V36 | 23 mm | PNP NO + NC | 5–36 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-230PC-Q4-K-V36 | 23 mm | PNP NO + NC | 5–36 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-230DA-C2 | 23 mm | DC 2-wire NO | 10–60 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-230DA-C2-K | 23 mm | DC 2-wire NO | 10–60 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-230DA-Q4 | 23 mm | DC 2-wire NO | 10–60 V DC | M12 connector | Standard | Quote |
| SGI-GP18U-230DA-Q4-K | 23 mm | DC 2-wire NO | 10–60 V DC | M12 connector | Short (K) | Quote |
| SGI-GP18U-230DB-C2 | 23 mm | DC 2-wire NC | 10–60 V DC | 2 m cable | Standard | Quote |
| SGI-GP18U-230DB-C2-K | 23 mm | DC 2-wire NC | 10–60 V DC | 2 m cable | Short (K) | Quote |
| SGI-GP18U-230DB-Q4-K | 23 mm | DC 2-wire NC | 10–60 V DC | M12 connector | Short (K) | Quote |
All models: M18 thread, non-flush mounting, nickel-plated brass housing; one model with code PL has a PBT plastic housing. Source: SEGMENsensor part-number master, 2026-10-17.
Availability
Number of part numbers per output, supply and sensing distance. Each count includes NO / NC / NO + NC contacts, cable or M12 connector and standard or short housing.
| Output · supply | 8 mm | 16 mm | 20 mm | 23 mm |
|---|---|---|---|---|
| NPN / PNP 3-wire · 10–30 V DC | 24 | 24 | 24 | 24 |
| NPN / PNP 3-wire · 5–36 V DC | 24 | 24 | 24 | 24 |
| NPN / PNP 3-wire · 10–55 V DC | 16 | 16 | 16 | 16 |
| DC 2-wire · 10–60 V DC | 8 | 7 | 8 | 7 |
| AC 2-wire · 20–250 V AC | 2 | 2 | — | — |
| AC/DC · 20–250 V AC/DC | 6 | 6 | — | — |
| Total | 80 | 79 | 72 | 71 |
“—”: no standard part number; send your requirement for a project evaluation.
Selection
Need a flush model for embedding in metal? See the M18 inductive proximity sensor overview.
Part number guide
Mounting
Mount it so the sensing face protrudes beyond the bracket, and keep metal and neighbouring sensors out of the zone around and in front of the face. IEC 60947-5-2 classifies proximity switches as embeddable (flush) or non-embeddable (non-flush); the minimum clearances for each part number are on its dimension drawing.
Wiring
A PNP 3-wire sensor switches L+ to the load, an NPN 3-wire sensor switches the load to L−, and a DC 2-wire sensor is wired in series with the load like a mechanical switch.
Wire colours and the M12 pin assignment are printed on the label and datasheet of each part number. M12 connectors with screw locking are specified in IEC 61076-2-101; proximity switch requirements, including connector annexes, in IEC 60947-5-2.
More detail: NPN vs PNP proximity sensor wiring · Sensing distance explained
Specifications
| Housing | M18 thread, nickel-plated brass (one PBT model) |
| Mounting | Non-flush (non-embeddable) |
| Rated sensing distance | 8 / 16 / 20 / 23 mm |
| Outputs | NPN, PNP (3-wire; NO, NC, NO + NC) · DC 2-wire · AC 2-wire · AC/DC (NO or NC) |
| Supply | 10–30 / 5–36 / 10–55 V DC (NPN/PNP) · 10–60 V DC (2-wire) · 20–250 V AC · 20–250 V AC/DC |
| Connection | 2 m cable or M12 connector |
| Housing length | Standard or short (K) |
| Other electrical data | Per part-number datasheet, sent with the quotation |
Datasheets and dimension drawings are sent by email on request.

Ordering
Qualification samples 1–5 pcs in 5–7 days; production planned around annual volume.
Contact us about OEM and private-label options.
FAQ
A flush (shielded) sensor can be mounted level with the surrounding metal. A non-flush (unshielded) sensor has a protruding sensing face and needs a metal-free zone around it, but reaches further. In SEGMENsensor data, M18 flush models are rated 5–15 mm and M18 non-flush models 8–23 mm.
Four rated sensing distances: 8 mm (80 models), 16 mm (79), 20 mm (72) and 23 mm (71). The distance is the three digits after the housing code in the part number, in 0.1 mm.
NPN and PNP 3-wire models are available for 10–30 V DC, 5–36 V DC or 10–55 V DC. DC 2-wire models run on 10–60 V DC, AC 2-wire models on 20–250 V AC, and AC/DC models on 20–250 V AC/DC.
Choose the 2 m cable (156 models) for a fixed installation wired directly into a junction box. Choose the M12 connector (146 models) when the sensor must be replaced quickly without rewiring, using a separate M12 cordset.
Part numbers with -K have a shorter housing for installations with limited depth behind the mounting bracket. 152 of the 302 models are short-housing versions; the housing length of each part number is on its dimension drawing.
Yes. Each SGI-GP18U part number is one fixed configuration. Click Quote in the model table or enter the part number in the form; the datasheet and lead time are confirmed with the quotation.
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