
- Recommended by AIS Vision

SR31
The SR31 is a compact metal-housed photoelectric fork sensor featuring a 30 mm × 42 mm slot and infrared LED emitter/receiver pair integrated in the fork arms. It operates on 10–30 VDC and delivers a 10 kHz switching frequency with 50 µs response time, making it suited for high-speed presence/absence and edge detection. Output polarity (NPN/PNP) and operating mode (light-on/dark-on) are selectable via a trimmer. The series also includes a Wide Gap variant (SR31-0) with a 120 mm slot gap. Housing is die-cast zinc (Zamak) rated IP60.
| Brand | Datalogic / Datasensing |
|---|---|
| Sensor type | fork label |
| Range / distance | 30.0 mm |
|---|---|
| Response time | 50.0 ms |
| Switching frequency | 10000 |
| Connection | cable_m8 |
|---|
| Supply voltage | 10–30 VDC |
|---|
| Operating temperature | -10 to +60 |
|---|
| Sensing method | through beam |
|---|---|
| Light source | ir_led |
| Output type | PUSH_PULL |
|---|
| Dimensions | 13×50×70 mm |
|---|---|
| Housing material | Zamak (die-cast zinc) |
AIS Vision · Integration
AIS Vision defines and tests the optimal combination of camera, optics and lighting for your application before you buy.