GRTB18-P2431V

Photo Sensor, 100mm, PNP, Background Suppression, Proximity, 30VDC, 4 Pin M12 Connector, GR18 Series

⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.

Manufacturer: SICK
Product type:
SVHC: No SVHC (21-Jan-2025)
Product Range: GR18 Series
Sensing Method: Background Suppression, Proximity
Connection Method: 4 Pin M12 Connector
Sensing Range Max: 100mm
Sensor Output Type: PNP
Supply Voltage DC Max: 30V
Supply Voltage DC Min: 10V

Delivery and price
Units per pack	50
Price	140.17 €
Current stock	10+
Lead time	30 days

Datasheet

GRTB18-P2431V GR18 

**CYLINDRICAL PHOTOELECTRIC SENSORS** 

**GRTB18-P2431V | GR18** CYLINDRICAL PHOTOELECTRIC SENSORS 

## Ordering information 

|**Type**|**Part no.**|
|---|---|
|GRTB18-P2431V|1085823|
|Other models and accessories<br> www.sick.com/GR18<br>=>||



Illustration may differ 

**==> picture [106 x 24] intentionally omitted <==**

**----- Start of picture text -----**<br>
ECOLAB ‘2:<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)**||18 mm x 18 mm x 73.5 mm|
|**Housing design (light emission)**||Cylindrical|
|**Housing length**||73.5 mm|
|**Thread length**||49.3 mm|
|**Thread diameter (housing)**||M18 x 1|
|**Optical axis**||Axial|
|**Sensing range max.**||3 mm ... 100 mm1)|
|**Sensing range**||15 mm ... 100 mm1)|
|**Type of light**||Visible red light|
|**Light source**||PinPoint LED2)|
|**Light spot size (distance)**||Ø 7 mm (100 mm)|
|**Wave length**||650 nm|
|**Adjustment**||None|
|**Indication**|||
||LED green|Operating indicator|
|||Static on: power on|
||LED yellow|Status of received light beam|
|||Static on: object present|
|||Static off: object not present|
|**Special applications**||Hygienic and washdown zones|



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

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

**Product data sheet | 2023-07-12 01:30:56 Subject to change without notice** 

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**PHOTOELECTRIC SENSORS | SICK** 

**GRTB18-P2431V | GR18** CYLINDRICAL PHOTOELECTRIC SENSORS 

## Mechanics/electronics 

|**Supply voltage**|10 V DC ... 30 V DC1)|
|---|---|
|**Ripple**|< 5 Vpp 2)|
|**Current consumption**|30 mA|
|**Switching output**|PNP|
|**Output function**|Complementary|
|**Switching mode**|Light/dark switching3)|
|**Signal voltage PNP HIGH/LOW**|VS- (≤ 3 V) / approx. 0 V|
|**Output current Imax.**|≤ 100 mA4)|
|**Response time**|< 500 µs5)|
|**Switching frequency**|1,000 Hz6)|
|**Connection type**|Male connector M12, 4-pin|
|**Circuit protection**|A7)<br>B8)<br>D9)|
|**Protection class**|III|
|**Weight**|65 g|
|**Housing material**|Stainless steel, Stainless steel V4A (1.4404, 316L)|
|**Optics material**|Plastic, PMMA|
|**Tightening torque, max.**|90 Nm|
|**Enclosure rating**|IP67<br>IP6810)<br>IP69K11)|
|**Items supplied**|Fastening nuts (2 x)|
|**Electromagnetic compatibility (EMC)**|EN 60947-5-2|
|**Ambient operating temperature**|–25 °C ... +55 °C12)|
|**Ambient temperature, storage**|–30 °C ... +75 °C|
|**UL File No.**|E348498|



1) Limit values. Operated in short-circuit protected network: max. 8 A. 

- 2) May not exceed or fall below Uv tolerances. 

- 3) Q = light switching; Ǭ = dark switching. 

- 4) At Uv > 24 V or ambient temperature > 49 °C, IA max. = 50 mA. 

- 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) D = outputs overcurrent and short-circuit protected. 

- 10) According to EN 60529 (10 m water depth / 24 h). 

11) According to ISO 20653:2013-03. 12) At Uv <=24V and IA<50mA. 

## Classifications 

|**eCl@ss 5.0**|27270904|
|---|---|
|**eCl@ss 5.1.4**|27270904|
|**eCl@ss 6.0**|27270904|



**2023-07-12 01:30:56 | Product data sheet Subject to change without notice** 

**PHOTOELECTRIC SENSORS | SICK** 

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**GRTB18-P2431V | GR18** CYLINDRICAL PHOTOELECTRIC SENSORS 

|**eCl@ss 6.2**|27270904|
|---|---|
|**eCl@ss 7.0**|27270904|
|**eCl@ss 8.0**|27270904|
|**eCl@ss 8.1**|27270904|
|**eCl@ss 9.0**|27270904|
|**eCl@ss 10.0**|27270904|
|**eCl@ss 11.0**|27270904|
|**eCl@ss 12.0**|27270903|
|**ETIM 5.0**|EC002719|
|**ETIM 6.0**|EC002719|
|**ETIM 7.0**|EC002719|
|**ETIM 8.0**|EC002719|
|**UNSPSC 16.0901**|39121528|



## Connection diagram 

## Cd-084 

**==> picture [62 x 60] intentionally omitted <==**

**----- Start of picture text -----**<br>
BN 1<br>+ (L+)<br>WH 2 Q<br>BU 3<br>—r -  (M)<br>BK 4<br>>—1- Q<br>**----- End of picture text -----**<br>


## Characteristic curve 

## GRTB18(S) Inox 

**==> picture [242 x 170] intentionally omitted <==**

**----- Start of picture text -----**<br>
Minimum distance between set sensing range and<br>background (white, 90%) in % of sensing range white background (90%)<br>y<br>25<br>20 6%/90% co =—e<br>1 x y<br>15 Example:<br>Sensing range on black, 6%<br>18%/90% x = 100 mm, y = (10% of 100 mm) =10 mm<br>10 2<br>90%/90%<br>5 3<br>0 x<br>0 50 100 150 200 250 300<br>(1.97) (13.94) (5.91) (7.87) (9.84) (11.81)<br>Distance in mm (inch)<br>1 Sensing range on black, 6 % remission<br>2 Sensing range on gray, 18 % remission<br>3 Sensing range on white, 90 % remission<br>**----- End of picture text -----**<br>


**4 PHOTOELECTRIC SENSORS | SICK** 

**Product data sheet | 2023-07-12 01:30:56 Subject to change without notice** 

**GRTB18-P2431V | GR18** CYLINDRICAL PHOTOELECTRIC SENSORS 

## Sensing range diagram 

GRTB18(S) Inox 

**==> picture [194 x 457] intentionally omitted <==**

**----- Start of picture text -----**<br>
1 5/8 90 95<br>2 3/5 95 100<br>3 2/3 100 105<br>0 20 40 60 80 100 120<br>(0.79) (1.57) (2.36) (3.15) (3.94) (4.72)<br>Distance in mm (inch)<br>Sensing range Sensing range max.<br>①   Sensing range on black, 6% remission<br>②   Sensing range on gray, 18 % remission<br>③   Sensing range on white, 90% remission<br>Dimensional drawing (Dimensions in mm (inch)) (Dimensions in mm (inch))<br>GRTB18 Inox, connector, straight<br>2 M18x1<br>3<br>5<br>1<br>M12x1<br>6<br>7<br>M18x1<br>8<br>4.7 (0.19)<br>25°<br>4<br>(0.16)<br> (1.94)<br> (2.89) 49.3<br>73.4<br>12.9 (0.51)<br>)<br>0.6 0.02(<br>**----- End of picture text -----**<br>


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

- ① Connection 

- ② Threaded mounting hole M18 x 1 

- ③ Fastening nuts (2 x); width across 24, stainless steel 

- ⑤ LED indicator (4 x) 

- ⑥ Optical axis, receiver 

- ⑦ Optical axis, sender 

- ⑧ Standard direction 

**2023-07-12 01:30:56 | Product data sheet Subject to change without notice** 

**PHOTOELECTRIC SENSORS | SICK** 

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**GRTB18-P2431V | GR18** CYLINDRICAL PHOTOELECTRIC SENSORS 

## Recommended accessories 

|Recommended accessories|||
|---|---|---|
|Other models and accessories<br> www.sick.com/GR18|||
|**Brief description**|**Type**|**Part no.**|
|Mounting brackets and plates|||
|Mounting bracket for M18 sensors, stainless steel, without mounting hardware|BEF-WN-M18N|5320947|
|Plug connectors and cables|||
|Head A: female connector, M12, 4-pin, straight|DOL-1204-G05MNI|6052615|
|Head B: Flying leads|||
|Cable: Sensor/actuator cable, PVC, unshielded, 5 m|||
|This product is generally resistant to chemical cleaning agents (see ECOLAB). Please do|||
|not use cleaning agents of any other Kind., Not resistant against lactic acid & hydrogen|||
|peroxide (H2O2)|||



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**Product data sheet | 2023-07-12 01:30:56 Subject to change without notice** 

**PHOTOELECTRIC SENSORS | SICK** 

## 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

Updated at March 31, 2026

SICK is a globally recognized leader in factory and logistics automation technology, renowned for engineering advanced sensors and developing innovative digital services. Driven by a commitment to high precision, reliability, and versatility, the company provides the foundational components required to transform traditional manufacturing processes into intelligent, self-optimizing systems that adapt autonomously using real-time data. Our comprehensive selection of SICK products is heavily focused on their industry-leading sensing technologies. We offer a robust portfolio of light sensors designed to deliver exceptional accuracy and performance in demanding industrial environments. Furthermore, our extensive range features high-quality proximity sensors and switches, providing the dependable object detection essential for automated production, packaging, and material handling applications. To ensure seamless integration of these advanced sensor networks, our offering is complemented by specialized connectivity solutions such as SICK fiber optic lead assemblies. From consumer goods and electronics to logistics and automotive manufacturing, SICK delivers the cutting-edge automation technology necessary to maximize operational efficiency and maintain continuous, reliable performance across diverse industrial sectors.

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