GRL18S-F245X

Photoelectric Sensor, 7.2m, 650nm Red LED, Retroreflective, Radial, Digital-PNP LO/DO, GR18 Series

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Manufacturer: SICK
Product type:
SVHC: No SVHC (21-Jan-2025)
IP Rating: IP67
Output Type: Digital - PNP LO / DO
Sensor Type: Photoelectric Sensor
Light Source: 650nm Red LED
Product Range: GR18 Series
Qualification: -
Sensing Method: Retroreflective
Connection Method: 4 Pin M12 Connector
Supply Voltage Max: 30VDC
Supply Voltage Min: 10VDC
Sensing Distance Max: 7.2m
Operating Temperature Max: 55°C
Operating Temperature Min: -25°C

Delivery and price
Units per pack	50
Price	58.06 €
Current stock	10+
Lead time	30 days

Datasheet

GRL18S-F245X GR18 **PHOTOELECTRIC SENSORS** 

**GRL18S-F245X | GR18** PHOTOELECTRIC SENSORS 

## Ordering information 

**Type part no.** ~~a~~ GRL18S-F245X 1116636 Other models and accessories www.sick.com/GR18 

Illustration may differ 

**==> picture [102 x 38] intentionally omitted <==**

**----- Start of picture text -----**<br>
Ws Ly ©<br>**----- End of picture text -----**<br>


Detailed technical data 

## Features 

|**Functional principle**|Photoelectric retro-reflective sensor|
|---|---|
|**Functional principle detail**|With minimum distance to reflector (dual lens system)|
|**Dimensions (W x H x D)**|18 mm x 18 mm x 38.1 mm|
|**Housing design (light emission)**|Cylindrical|
|**Thread diameter (housing)**|M18 x 1|
|**Optical axis**|Radial, fully flush|
|**Sensing range max.**|0.03 m ... 7.2 m1)|
|**Sensing range**|0.06 m ... 6 m1)|
|**Type of light**|Visible red light|
|**Light source**|PinPoint LED2)|
|**Light spot size (distance)**|Ø 175 mm (7 m)|
|**Wave length**|650 nm|
|**Adjustment**|Potentiometer, 270°|
|**Display**<br>LED green<br>LED yellow||
||Operating indicator<br>Static on: power on|
||Status of received light beam<br>Static on: object not present<br>Static off: object present|



1) Reflector PL80A. 

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

**Data sheet | 2026-04-29 05:52:06 Subject to change without notice** 

**2 PHOTOELECTRIC SENSORS | SICK** 

**GRL18S-F245X | GR18** PHOTOELECTRIC SENSORS 

## Mechanics/electronics 

|**Supply voltage UB**|10 V DC ... 30 V DC1)|
|---|---|
|**Ripple**|< 5 Vpp 2)|
|**Current consumption**|30 mA|
|**Switching output**|PNP|
|**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|
|**Polarisation filter**|✔|
|**Housing material**|Metal, Nickel-plated brass and ABS|
|**Optics material**|Plastic, PMMA|
|**Enclosure rating**|IP67|
|**Items supplied**|Fastening nuts (2 x), Reflector P250|
|**Electromagnetic compatibility (EMC)**|EN 60947-5-2|
|**Ambient operating temperature**|–25 °C ... +55 °C10)|
|**Ambient temperature, storage**|–40 °C ... +70 °C|
|**UL File No.**|NRKH.E348498 & NRKH7.E348498|



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

2) May not fall below or exceed UV tolerances. 3) Control wire open: dark switching D.ON. 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) At Uv <=24V and IA<50mA. 

## Certificates 

|**EU declaration of conformity**|✔|
|---|---|
|**UK declaration of conformity**|✔|
|**ACMA declaration of conformity**|✔|
|**Moroccan declaration of conformity**|✔|
|**China RoHS**|✔|
|**ECOLAB certificate**|✔|
|**cULus certificate**|✔|



**2026-04-29 05:52:06 | Data sheet Subject to change without notice** 

**PHOTOELECTRIC SENSORS | SICK** 

**3** 

**GRL18S-F245X | GR18** PHOTOELECTRIC SENSORS 

## **Photobiological safety (DIN EN 62471) cer-** ✔ **tificate** 

## Classifications 

|**ECLASS 5.0**|27270902|
|---|---|
|**ECLASS 5.1.4**|27270902|
|**ECLASS 6.0**|27270902|
|**ECLASS 6.2**|27270902|
|**ECLASS 7.0**|27270902|
|**ECLASS 8.0**|27270902|
|**ECLASS 8.1**|27270902|
|**ECLASS 9.0**|27270902|
|**ECLASS 10.0**|27270902|
|**ECLASS 11.0**|27270902|
|**ECLASS 12.0**|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-087 

BN 1 ~~<—~~ + (L+) WH 2 L/D ~~<~_-~~ BU 3 **-** (M) BK 4 ~~>—1-~~ Q 

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**Data sheet | 2026-04-29 05:52:06 Subject to change without notice** 

**PHOTOELECTRIC SENSORS | SICK** 

**GRL18S-F245X | GR18** PHOTOELECTRIC SENSORS 

## Characteristic curve GRL18S 

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**----- Start of picture text -----**<br>
Operating reserve<br>100<br>10<br>� � � � � �<br>1<br>0 1 2 3 4 5 6 7 8<br>(3.28) (6.56) (9.84) (13.12) (16.40) (19.69) (22.97) (26.25)<br>Distance in m (feet)<br>**----- End of picture text -----**<br>


① Reflector PL80A ② Reflector PL40A 

③ Reflector PL20A ④ Reflector P250 

⑤ Reflector PL22 

⑥ Reflective tape REF-Plus 3436 

## Light spot size GRL18S 

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Diameter in mm (inch)<br>Ø 25<br>Ø 8 Ø 75 Ø 175<br>(0.98)<br>(0.31) (2.95) (6.89)<br>0.2 1 3 7<br>(0.66)(3.28) (9.84) (22.97)<br>Distance in m (feet)<br>Sensor<br>**----- End of picture text -----**<br>


**2026-04-29 05:52:06 | Data sheet Subject to change without notice** 

**PHOTOELECTRIC SENSORS | SICK** 

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**GRL18S-F245X | GR18** PHOTOELECTRIC SENSORS 

## Sensing range diagram GRL18S 

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**----- Start of picture text -----**<br>
0.03/0.06 6.0 7.2<br>OL __________<br>a 0.03/0.06 5.2 6.2 ae<br>ej_____ 0.03/0.06 2.9 3.8 __ Lo ae<br>EERE<br>0.03/0.06 5.4 6.4<br>________ one<br>0.03/0.06 1.9/2.2<br>Cl _ ee<br>0.06/0.08 1.6/2.0<br>Cl___ IRIE<br>0 1 2 3 4 5 6 7 8<br>(3.28) (6.56) (9.84) (13.12) (16.40) (19.69) (22.97) (26.25)<br>Distance in m (feet)<br>**----- End of picture text -----**<br>


Sensing range Sensing range max. 

① Reflector PL80A 

② Reflector PL40A 

③ Reflector PL20A 

④ Reflector P250 

⑤ Reflector PL22 

⑥ Reflective tape REF-Plus 3436 

## Response range GRL18S 

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**----- Start of picture text -----**<br>
Parallel operating range y in mm (inch)<br>100<br>(3.94) Target reflector<br>80 y (reflector size) | | | | Cl<br>(3.15)<br>60 x eeeNO<br>(2.36)<br>40 sg| tT<br>(1.57)<br>20<br>aa<br>(0.79)<br>0 —T Ne tt<br>-20 — e\jo| Vt<br>J} | 7 | ell |<br>(-0.79)<br>-40 a ee |<br>(-1.57)<br>-60 mee<br>(-2.36)<br>-80 PPO EEL |<br>(-3.15)<br>-100<br>Pt tt ft ft ete<br>(-3.94)<br>0 1 2 3 4 5 6 7 8<br>(3.28) (6.56) (9.84) (13.12) (16.40) (19.69) (22.97) (26.25)<br>Distance x in m (feet)<br>**----- End of picture text -----**<br>


① Reflector PL80A ② Reflector PL40A ③ Reflector PL20A 

④ Reflector P250 

⑤ Reflector PL22 

⑥ Reflective tape REF-Plus 3436 

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**Data sheet | 2026-04-29 05:52:06 Subject to change without notice** 

**PHOTOELECTRIC SENSORS | SICK** 

**GRL18S-F245X | GR18** PHOTOELECTRIC SENSORS 

## Dimensional drawing GR18S, metal, connector, angled, fully flush 

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**----- Start of picture text -----**<br>
Ø 23 (0.91)<br>2 13.5<br>(0.53)<br>1 x M18 3<br>4 Ola<br>C JT | \ eee<br>6<br>T ri<br>5<br>aS LS<br>1 4= J EL=<br>1 x M12<br>(0.09)<br>(0.11)<br>2.2<br>(0.63) 2.8<br>17.1 (0.67)<br>16  9.3<br>(0.37)<br>6)<br>.1<br>(0<br> (1.44)<br>4<br>36.6<br>11.5 (0.45)<br>**----- End of picture text -----**<br>


Dimensions in mm (inch) 

① Connector M12, 3-pin 

② Threaded mounting hole M18 x 1 

③ LED indicator yellow 

④ LED indicator green 

⑤ Dummy plug 

⑥ fastening nut; 24 mm hex, metal 

## Recommended accessories 

Other models and accessories www.sick.com/GR18 

||**Brief description**|**Type**|**part no.**|
|---|---|---|---|
|Mounting systems||||
|<°|• **Description:**Mounting bracket for M18 sensors<br>• **Material:**Steel<br>• **Details:**Steel, zinc coated<br>• **Items supplied:**Without mounting hardware<br>• **Suitable for:**GR18, V180-2, V18, W15, Z1, Z2|BEF-WN-M18|5308446|
||• **Description:**Universal mounting bracket for reflectors<br>• **Dimensions (W x H x L):**85 mm x 90 mm x 35 mm<br>• **Material:**Steel<br>• **Details:**Steel, zinc coated<br>• **Suitable for:**C110A, P250, PL20, PL30A, PL40A, PL80A|BEF-WN-REFX|2064574|
|ty|• **Description:**Mounting tool for "fully flush" variants<br>• **Usable for:**GR18<br>• **Suitable for:**GR18S, radial, fully flush|BEF-TO-GR18S|4072132|
|reflectors and optics||||
||• **Description:**Rectangular, screw connection<br>• **Dimensions:**51 mm 61 mm<br>• **Ambient operating temperature:**–30 °C ... +65 °C|P250|5304812|



**2026-04-29 05:52:06 | 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

Updated at April 23, 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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