# Photo Sensor, 4 m, NPN / PNP, Retroreflective, 10 to 30 VDC, M12 Connector, W12G Series

![Product image](https://novapart.co/image/farnell:1697929/)

**URL**: https://novapart.co/products/WL12G-3B2531/photo-sensor-4-m-npn-pnp-retroreflective-10-to-30
**SKU**: WL12G-3B2531
**Manufacturer**: SICK
**Price**: €225.1000
**Stock**: 10+
**Lead Time**: 43 days (indicative)

## Description

Sensing Range Max:2.5m; Sensing Method:Retroreflective; Sensor Output:NPN / PNP; Product Range:W12 Series; Connection Method:M12 Connector; Supply Voltage DC Min:10V; Supply Voltage DC Max:30V

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (21-Jan-2025) |
| Product Range | W12 Series |
| Sensing Method | Retroreflective |
| Connection Method | M12 Connector |
| Sensing Range Max | 4m |
| Sensor Output Type | NPN / PNP |
| Supply Voltage Max | 30V |
| Supply Voltage Min | 10V |
| Sensing Distance Max | 2.5m |
| Supply Voltage Dc Max | 30V |
| Supply Voltage Dc Min | 10V |
| Operating Temperature Max | 60°C |
| Operating Temperature Min | -40°C |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:1697929/)

WL12G-3B2531 W12G 

**SMALL PHOTOELECTRIC SENSORS** 

**WL12G-3B2531 | W12G** SMALL PHOTOELECTRIC SENSORS 

## Ordering information 

|**Type**|**Part no.**|
|---|---|
|WL12G-3B2531|1041456|
|**Included in delivery:**BEF-KH-W12 (2)||
|Other models and accessories<br> www.sick.com/W12G<br>=>||



Illustration may differ 

## Detailed technical data 

## Features 

|**Device type**|Photoelectric sensors|
|---|---|
|**Sensor/ detection principle**|Photoelectric retro-reflective sensor, autocollimation|
|**Dimensions (W x H x D)**|15.6 mm x 48.5 mm x 42 mm|
|**Housing design (light emission)**|Rectangular|
|**Sensing range max.**|0 m ... 4 m1)|
|**Focus**|Approx. 1.5°|
|**Type of light**|Visible red light|
|**Light source**|LED2)|
|**Light spot size (distance)**|Ø 25 mm (1.5 m)|
|**Angle of dispersion**|Approx. 1.5°|
|**Wave length**|640 nm|
|**Adjustment**|Potentiometer, 11 turns|
|**Special applications**|Detecting transparent objects|



- 1) Reflector PL80A. 

2) Average service life: 100,000 h at TU = +25 °C. 

**Product data sheet | 2021-12-20 20:20:56 Subject to change without notice** 

**2** 

**PHOTOELECTRIC SENSORS | SICK** 

**WL12G-3B2531 | W12G** SMALL PHOTOELECTRIC SENSORS 

## Mechanics/electronics 

|**Supply voltage**|10 V DC ... 30 V DC1)|
|---|---|
|**Ripple**|< 5 Vpp 2)|
|**Current consumption**|30 mA3)|
|**Switching output**|PNP<br>NPN|
|**Switching mode**|Light switching<br>Dark switching|
|**Switching mode selector**|Selectable via L/D control cable|
|**Signal voltage PNP HIGH/LOW**|> Uv - 3 V / ca. 0 V|
|**Output current Imax.**|≤ 100 mA|
|**Response time**|≤ 330 µs4)|
|**Switching frequency**|1,500 Hz5)|
|**Connection type**|Male connector M12, 5-pin|
|**Circuit protection**|A6)<br>C7)<br>D8)|
|**Protection class**|III|
|**Weight**|120 g|
|**Polarisation filter**|✔|
|**Housing material**|Metal, zinc diecast|
|**Optics material**|Plastic, PMMA|
|**Enclosure rating**|IP66<br>IP67<br>IP69K|
|**Items supplied**|2 x clamps BEF-KH-W12, incl. screws|
|**Special feature**|Detecting transparent objects|
|**Ambient operating temperature**|–40 °C ... +60 °C|
|**Ambient temperature, storage**|–40 °C ... +75 °C|
|**UL File No.**|NRKH.E181493 & NRKH7.E181493|



1) Limit values when operated in short-circuit protected network: max. 8 A. 2) May not exceed or fall below Uv tolerances. 

3) Without load. 

4) Signal transit time with resistive load. 

5) With light/dark ratio 1:1. 

6) A = VS connections reverse-polarity protected. 7) C = interference suppression. 8) D = outputs overcurrent and short-circuit protected. 

## Safety-related parameters 

|**MTTFD**|823 years|
|---|---|
|**DCavg**|0 %|
|Classifications||
|**ECl@ss 5.0**|27270902|
|**ECl@ss 5.1.4**|27270902|



**2021-12-20 20:20:56 | Product data sheet Subject to change without notice** 

**PHOTOELECTRIC SENSORS | SICK** 

**3** 

**WL12G-3B2531 | W12G** SMALL PHOTOELECTRIC SENSORS 

|**ECl@ss 6.0**|27270902|
|---|---|
|**ECl@ss 6.2**|27270902|
|**ECl@ss 7.0**|27270902|
|**ECl@ss 8.0**|27270902|
|**ECl@ss 8.1**|27270902|
|**ECl@ss 9.0**|27270902|
|**ECl@ss 10.0**|27270902|
|**ECl@ss 11.0**|27270902|
|**ETIM 5.0**|EC002717|
|**ETIM 6.0**|EC002717|
|**ETIM 7.0**|EC002717|
|**ETIM 8.0**|EC002717|
|**UNSPSC 16.0901**|39121528|



## Connection type 

## Connection diagram 

Cd-145 

BN 1 + (L+) WH 2 ~~ane~~ QNPN ~~le~~ BU 3 **-** (M) BK I 4 ~~oT~~ QPNP GY 5 ~~—<++=~~ L/D 

**4** 

**Product data sheet | 2021-12-20 20:20:56 Subject to change without notice** 

**PHOTOELECTRIC SENSORS | SICK** 

**WL12G-3B2531 | W12G** SMALL PHOTOELECTRIC SENSORS 

## Light spot size 

**==> picture [113 x 144] intentionally omitted <==**

**----- Start of picture text -----**<br>
17.5 43.0<br>(0.69) (1.69)<br>11.5 33.0 65.0<br>(0.45) (1.30) (2.56)<br>500 2,000 4,000<br>(19.69) (78.74) (157.48)<br>1,000 3,000<br>(39.37) (118.11)<br>Distance<br>All dimensions in mm (inch)<br>Sensor<br>**----- End of picture text -----**<br>


Sensing range diagram 

WL12G-3 

**==> picture [202 x 155] intentionally omitted <==**

**----- Start of picture text -----**<br>
� 0 4.0<br>� 0 4.0<br>� 0 3.0<br>� 0 3.5<br>� 0 3.5<br>� 0 3.0<br>� 0 1.8<br>� 0 0.6<br>0 1.0 2.0 3.0 4.0<br>(3.28) (6.56) (9.84) (13.12)<br>Distance in m (feet)<br>**----- End of picture text -----**<br>


Sensing range max. 

- ① Reflector PL80A 

- ② Reflector C110A 

- ③ Reflector P250F 

- ④ Reflector PL50A 

- ⑤ Reflector PL40A 

- ⑥ Reflector PL30A 

- ⑦ Reflector PL20A 

- ⑧ Reflective tape REF-IRF-56 

**2021-12-20 20:20:56 | Product data sheet Subject to change without notice** 

**PHOTOELECTRIC SENSORS | SICK** 

**5** 

**WL12G-3B2531 | W12G** SMALL PHOTOELECTRIC SENSORS 

## Adjustments 

WL12-3, WSE12-3 

- ② LED indicator yellow: Status of received light beam 

- ③ LED indicator green: Supply voltage active 

- ⑥ Sensitivity control: potentiometer 

Dimensional drawing (Dimensions in mm (inch)) 

WL12-3, WSE12-3 

**==> picture [198 x 255] intentionally omitted <==**

**----- Start of picture text -----**<br>
24 (0.94) 10 (0.39)<br>4<br>42 (1.65)<br>15.6 (0.61) 29.9 (1.18)<br>5<br>12.9<br>1 (0.51)<br>7.3 (0.29) 6.1<br>(0.24)<br>ian<br>7 5<br>23.1<br>(0.91)<br>6<br>3<br>2<br>19.4<br>(0.76)<br>a e<br>3.5<br>(0.14)<br>ø 4.2 (0.91)<br> (1.57)  (1.91)<br> (1.26) 39.9 48.5<br>32<br>5.1 0.2)(<br>**----- End of picture text -----**<br>


- ① Optical axis 

- ② LED indicator yellow: Status of received light beam 

- ③ LED indicator green: Supply voltage active 

- ④ M4 threaded mounting hole, 4 mm deep 

- ⑤ Mounting hole, Ø 4.2 mm 

- ⑥ Sensitivity control: potentiometer 

- ⑦ Connection 

**6** 

**Product data sheet | 2021-12-20 20:20:56 Subject to change without notice** 

**PHOTOELECTRIC SENSORS | SICK** 

**WL12G-3B2531 | W12G** SMALL PHOTOELECTRIC SENSORS 

## Recommended accessories 

> Other models and accessories > www.sick.com/W12G 

||**Brief description**|**Type**|**Part no.**|
|---|---|---|---|
|Mounting brackets and plates||||
||Universal mounting bracket for reflectors, steel, zinc coated|BEF-WN-REFX|2064574|
|Plug connectors and cables||||
||Head A: female connector, M12, 5-pin, angled, A-coded|YG2A15-|2096215|
||Head B: Flying leads|020VB5XLEAX||
||Cable: Sensor/actuator cable, PVC, unshielded, 2 m|||
|Reflectors||||
||Fine triple reflector, screw connection, suitable for laser sensors, 52 mm x 62 mm, PM-|P250F|5308843|
||MA/ABS, Screw-on, 2 hole mounting|||



**2021-12-20 20:20:56 | Product data sheet Subject to change without notice** 

**PHOTOELECTRIC SENSORS | SICK** 

**7** 

## SICK At A GlAnCe 

SICK is one of the leading manufacturers of intelligent sensors and sensor solutions for industrial applications. A unique range of products and services creates the perfect basis for controlling processes securely and efficiently, protecting individuals from accidents and preventing damage to the environment. 

We have extensive experience in a wide range of industries and understand their processes and requirements. With intelligent sensors, we can deliver exactly what our customers need. In application centers in Europe, Asia and North America, system solutions are tested and optimized in accordance with customer specifications. All this makes us a reliable supplier and development partner. 

Comprehensive services complete our offering: SICK lifetime Services provide support throughout the machine life cycle and ensure safety and productivity. 

For us, that is “Sensor Intelligence.” 

## WOrldWIde preSenCe: 

Contacts and other locations www.sick.com 

SICK AG | Waldkirch | Germany | www.sick.com 



## Links

- [View this product on Novapart](https://novapart.co/products/WL12G-3B2531/photo-sensor-4-m-npn-pnp-retroreflective-10-to-30)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/sick-optic-electronic/wl12g-3b2531/photoswitch-object-sensor/dp/1697929)
---

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