# Laser Sensor, PNP, 400 mm, 10 V to 30 V, 100 mA, W9 Series

![Product image](https://novapart.co/image/farnell:4390909/)

**URL**: https://novapart.co/products/WTB9M4L-3P2491/laser-sensor-pnp-400-mm-10-v-to-30-100-ma-w9
**SKU**: WTB9M4L-3P2491
**Manufacturer**: SICK
**Price**: €249.0200
**Stock**: 10+
**Lead Time**: 43 days (indicative)

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (21-Jan-2025) |
| Ip Rating | IP66, IP67, IP69K |
| Output Type | Complementary PNP |
| Sensor Type | Photoelectric Sensor |
| Light Source | 650nm Red Laser |
| Product Range | W9 Series |
| Qualification | - |
| Sensing Method | Background Suppression, Proximity |
| Connection Method | 4 Pin M12 Connector |
| Sensing Range Max | 400mm |
| Sensor Output Type | PNP |
| Supply Voltage Max | 30VDC |
| Supply Voltage Min | 10VDC |
| Sensing Distance Max | 400mm |
| Supply Voltage Dc Max | 30V |
| Supply Voltage Dc Min | 10V |
| Operating Temperature Max | 50°C |
| Operating Temperature Min | -10°C |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:4390909/)

WTB9M4L-3P2491 W9 

**SMALL PHOTOELECTRIC SENSORS** 

**WTB9M4L-3P2491 | W9** SMALL PHOTOELECTRIC SENSORS 

## Ordering information 

|**Type**|**Part no.**|
|---|---|
|WTB9M4L-3P2491|1058225|
|Other models and accessories<br> www.sick.com/W9<br>>||



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Illustration may differ<br>**----- End of picture text -----**<br>


## Detailed technical data 

## Features 

|**Functional principle**|Photoelectric proximity sensor|
|---|---|
|**Functional principle detail**|Background suppression|
|**Dimensions (W x H x D)**|12.2 mm x 52.2 mm x 23.6 mm|
|**Housing design (light emission)**|Rectangular|
|**Mounting hole**|M4|
|**Sensing range max.**|25 mm ... 400 mm1)|
|**Sensing range**|25 mm ... 400 mm1)|
|**Type of light**|Visible red light|
|**Light source**|Laser2)|
|**Light spot size (distance)**|Ø 0.9 mm (230 mm)|
|**Wave length**|650 nm|
|**Laser class**|2 (IEC 60825-1 / CDRH 21 CFR 1040.10 & 1040.11)|
|**Adjustment**|Potentiometer, 5 turns|
|**Special applications**|Detecting small objects|



1) Object with 90% remission (based on standard white, DIN 5033). 

2) Average service life: 50,000 h at TU = +25 °C. 

**Product data sheet | 2024-03-05 18:31:19 Subject to change without notice** 

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**PHOTOELECTRIC SENSORS | SICK** 

**WTB9M4L-3P2491 | W9** SMALL PHOTOELECTRIC SENSORS 

## Mechanics/electronics 

|**Supply voltage UB**|10 V DC ... 30 V DC1)|
|---|---|
|**Ripple**|< 5 Vpp 2)|
|**Current consumption**|30 mA3)|
|**Switching output**|PNP4)|
|**Output function**|Complementary|
|**Switching mode**|Light/dark switching4)|
|**Output current Imax.**|≤ 100 mA|
|**Response time**|≤ 1 ms5)|
|**Switching frequency**|500 Hz6)|
|**Connection type**|Male connector M12, 4-pin|
|**Circuit protection**|A7)<br>B8)<br>C9)|
|**Protection class**|III|
|**Weight**|13 g|
|**Housing material**|Plastic, VISTAL®|
|**Optics material**|Plastic, PMMA|
|**Enclosure rating**|IP66<br>IP67<br>IP69K|
|**Ambient operating temperature**|–10 °C ... +50 °C|
|**Ambient operating temperature extended**|–30 °C ... +55 °C10) 11)|
|**Ambient temperature, storage**|–30 °C ... +70 °C|
|**UL File No.**|NRKH.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) Q = light switching. 

5) Signal transit time with resistive load. 

6) With light/dark ratio 1:1. 

7) A = VS connections reverse-polarity protected. 

8) B = inputs and output reverse-polarity protected. 

9) C = interference suppression. 

10) As of Ta = 50 °C, a max. supply voltage Vmax. = 24 V and a max. load current Imax. = 50 mA is permitted. 

11) Operation below Tu –10 °C is possible if the sensor is already switched on at Tu > –10 °C, then cools down, and the supply voltage is subsequently not switched off. Switching on below Tu –10 °C is not permissible. 

## Safety-related parameters 

|**MTTFD**|424 years (EN ISO 13849-1)1)|
|---|---|
|**DCavg**|0 %|



- 1) Mode of calculation: Parts-Count-calculation. 

## Classifications 

|**ECLASS 5.0**|27270904|
|---|---|
|**ECLASS 5.1.4**|27270904|



**2024-03-05 18:31:19 | Product data sheet Subject to change without notice** 

**PHOTOELECTRIC SENSORS | SICK** 

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**WTB9M4L-3P2491 | W9** SMALL PHOTOELECTRIC SENSORS 

|**ECLASS 6.0**<br>~~Me~~|27270904<br>~~Me~~|
|---|---|
|**ECLASS 6.2**<br>~~Me~~<br>~~Me~~|27270904<br>~~Me~~<br>~~Me~~|
|**ECLASS 7.0**<br>~~Me~~<br>~~Me~~|27270904<br>~~Me~~<br>~~Me~~|
|**ECLASS 8.0**<br>~~Me~~<br>~~Me~~|27270904<br>~~Me~~<br>~~Me~~|
|**ECLASS 8.1**<br>~~Me~~<br>~~Me~~|27270904<br>~~Me~~<br>~~Me~~|
|**ECLASS 9.0**<br>~~Me~~<br>~~Me~~|27270904<br>~~Me~~<br>~~Me~~|
|**ECLASS 10.0**<br>~~Me~~<br>~~Me~~|27270904<br>~~Me~~<br>~~Me~~|
|**ECLASS 11.0**<br>~~Me~~<br>~~Me~~|27270904<br>~~Me~~<br>~~Me~~|
|**ECLASS 12.0**<br>~~Me~~<br>~~Me~~|27270903<br>~~Me~~<br>~~Me~~|
|**ETIM 5.0**<br>~~Me~~<br>~~Me~~|EC002719<br>~~Me~~<br>~~Me~~|
|**ETIM 6.0**<br>~~Me~~<br>~~Me~~|EC002719<br>~~Me~~<br>~~Me~~|
|**ETIM 7.0**<br>~~Me~~<br>~~Me~~|EC002719<br>~~Me~~<br>~~Me~~|
|**ETIM 8.0**<br>~~Me~~<br>~~Me~~|EC002719<br>~~Me~~<br>~~Me~~<br>~~—eSS~~|
|**UNSPSC 16.0901**<br>~~Me~~<br>~~ee~~|39121528<br>~~Me~~<br>~~ee~~<br>~~—eSS~~|



## Adjustments 

Potentiometer 

- ④ LED indicator yellow: Status of received light beam 

- ⑤ LED indicator green: power on 

- ⑨ Adjustment of sensing range 

## Connection diagram 

## Cd-083 

**==> picture [61 x 59] intentionally omitted <==**

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**Product data sheet | 2024-03-05 18:31:19 Subject to change without notice** 

**PHOTOELECTRIC SENSORS | SICK** 

**WTB9M4L-3P2491 | W9** SMALL PHOTOELECTRIC SENSORS 

## Characteristic curve 

## WTB9L-3, laser class 2 

## % of sensing range 

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**----- Start of picture text -----**<br>
25<br>6 %/90 %<br>20<br>15<br>18 %/90 %<br>10<br>90 %/90 %<br>5<br>0<br>50 100 150 200 250 300 350 400<br>(1.97) (3.94) (5.91) (7.87) (9.84) (11.81) (13.78)(15.75)<br>Sensing range in mm (inch)<br>**----- End of picture text -----**<br>


- ① Sensing range on black, 6% remission factor 

- ② Sensing range on gray, 18% remission factor 

- ③ Sensing range on white, 90% remission factor 

## Light spot size 

WTB9L-3, laser class 2 

## Radius in mm (inch) 

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**----- Start of picture text -----**<br>
1 Dimensions in mm (inch)<br>0.8 Sensing range Vertical Horizontal<br>50 mm 1.2 1.0<br>0.6<br>(1.97) (0.05) (0.04)<br>0.4 100 mm 1.1 1.0<br>(3.94) (0.04) (0.04)<br>0.2<br>200 mm 0.9 0.9<br>(7.87) (0.04) (0.04)<br>0<br>400 mm 0.8 0.8<br>–0.2 (15.75) (0.03) (0.03)<br>–0.4<br>–0.6<br>–0.8<br>–1<br>50 100 150 200 250 300 350 400<br>(1.97) (3.94) (5.91) (7.87) (9.84) (11.81)(13.78)(15.75) Vertical<br>Sensing range in mm (inch) Horizontal<br>**----- End of picture text -----**<br>


**2024-03-05 18:31:19 | Product data sheet Subject to change without notice** 

**PHOTOELECTRIC SENSORS | SICK** 

**5** 

**WTB9M4L-3P2491 | W9** SMALL PHOTOELECTRIC SENSORS 

## Sensing range diagram 

WTB9L-3, laser class 2 

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**----- Start of picture text -----**<br>
25 230<br>25 300<br>4 25 400<br>50 100 150 200 250 300 350 400<br>(1.97) (3.94) (5.91) (7.87) (9.84)(11.81)(13.78)(15.75)<br>Distance in mm (inch)<br>**----- End of picture text -----**<br>


Sensing range typ. max. 

- ① Sensing range on black, 6% remission factor 

- ② Sensing range on gray, 18% remission factor 

- ③ Sensing range on white, 90% remission factor 

## Dimensional drawing (Dimensions in mm (inch)) 

WTB9M4L-3 

**==> picture [305 x 161] intentionally omitted <==**

**----- Start of picture text -----**<br>
12.2<br>(0.48) 23.6 (0.93)<br>3.7 (0.15)<br>toMy<br>①   Center of optical axis, receiver<br>②   Center of optical axis, sender<br>4.5 0.18)( 0.2 0.01)(<br>)<br>11.1 (0.44) 15.4 0.61( ) ) )<br>(0.28) 10 0.39)() 501.97( ) 49.81.96( ) 52.52.07(<br>7.1  0.78( 0.89(<br>20.1 0.79(<br>19.7 22.6<br>**----- End of picture text -----**<br>


- ③ Mounting hole M4 (Ø 4.1 mm) 

- ④ LED indicator yellow: Status of received light beam 

- ⑤ LED indicator green: power on 

- ⑥ Connecting cable or connecting cable with connector 

- ⑦ Male connector M8, 4-pin 

- ⑧ Male connector M12, 4-pin 

## Recommended accessories 

Other models and accessories www.sick.com/W9 

||**Brief description**|**Type**|**Part no.**|
|---|---|---|---|
|Mounting brackets and plates||||
|l|Mounting bracket, steel, zinc coated, mounting hardware included|BEF-WN-W9-2|2022855|



**6** 

**Product data sheet | 2024-03-05 18:31:19 Subject to change without notice** 

**PHOTOELECTRIC SENSORS | SICK** 

**WTB9M4L-3P2491 | W9** SMALL PHOTOELECTRIC SENSORS 

|**Brief description**<br>a|**Type**<br>**Part no.**|
|---|---|
|Plug connectors and cables<br>Head A: female connector, M12, 4-pin, straight, A-coded<br>Head B: Flying leads<br>Cable: Sensor/actuator cable, PVC, unshielded, 5 m<br>Head A: male connector, M12, 4-pin, straight<br>Cable: unshielded<br>~~Ne~~<br>ws|YF2A14-<br>050VB3XLEAX<br>2096235<br>STE-1204-G<br>6009932<br>~~»~~<br>~~sz~~|



**2024-03-05 18:31:19 | 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/WTB9M4L-3P2491/laser-sensor-pnp-400-mm-10-v-to-30-100-ma-w9)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/sick/wtb9m4l-3p2491/photoelectric-sensor-400mm/dp/4390909)
---

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