GRL18-F2452

Photoelectric Sensor, 7.2m, 650nm Red LED, Retroreflective, Axial, 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	72.9 €
Current stock	10+
Lead time	30 days

Datasheet

GRL18-F2452 GR18 

**PHOTOELECTRIC SENSORS** 

**GRL18-F2452 | GR18** PHOTOELECTRIC SENSORS 

## Ordering information 

|**Type**|**part no.**|
|---|---|
|GRL18-F2452|1116605|
|Other models and accessories<br> www.sick.com/GR18||



## Illustration may differ 

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@- Ls @<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 73.5 mm|
|**Housing design (light emission)**|Cylindrical|
|**Thread diameter (housing)**|M18 x 1|
|**Optical axis**|Axial|
|**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|
|**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** 

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**PHOTOELECTRIC SENSORS | SICK** 

**GRL18-F2452 | 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.**|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**|✔|



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**GRL18-F2452 | GR18** PHOTOELECTRIC SENSORS 

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

|**ECLASS 5.0**<br>~~Me~~|27270902<br>~~Me~~|
|---|---|
|**ECLASS 5.1.4**<br>~~Me~~<br>~~Me~~|27270902<br>~~Me~~<br>~~Me~~|
|**ECLASS 6.0**<br>~~Me~~<br>~~Me~~<br>~~—<—~~|27270902<br>~~Me~~<br>~~Me~~<br>~~—<—~~|
|**ECLASS 6.2**<br>~~Me~~<br>~~—<—~~|27270902<br>~~Me~~<br>~~—<—~~|
|**ECLASS 7.0**<br>~~—<—~~|27270902<br>~~—<—~~|
|**ECLASS 8.0**<br>~~—<—~~<br>~~Me~~|27270902<br>~~—<—~~<br>~~Me~~|
|**ECLASS 8.1**<br>~~Me~~<br>~~Me~~|27270902<br>~~Me~~<br>~~Me~~|
|**ECLASS 9.0**<br>~~Me~~<br>~~Me~~|27270902<br>~~Me~~<br>~~Me~~|
|**ECLASS 10.0**<br>~~Me~~<br>~~Me~~|27270902<br>~~Me~~<br>~~Me~~|
|**ECLASS 11.0**<br>~~Me~~<br>~~Me~~|27270902<br>~~Me~~<br>~~Me~~|
|**ECLASS 12.0**<br>~~Me~~<br>~~Me~~|27270902<br>~~Me~~<br>~~Me~~|
|**ETIM 5.0**<br>~~Me~~<br>~~Me~~|EC002717<br>~~Me~~<br>~~Me~~|
|**ETIM 6.0**<br>~~Me~~<br>~~Me~~|EC002717<br>~~Me~~<br>~~Me~~|
|**ETIM 7.0**<br>~~Me~~<br>~~I~~|EC002717<br>~~Me~~<br>~~I~~|
|**ETIM 8.0**<br>~~I~~<br>~~Me~~|EC002717<br>~~I~~<br>~~Me~~|
|**UNSPSC 16.0901**<br>~~Me~~<br>~~Me~~|39121528<br>~~Me~~<br>~~Me~~|



Adjustments GRL18(S), GRSE18(S), Sensitivity setting: Potentiometer, 270° 

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Sensitivity<br>+ –<br>+ –<br>**----- End of picture text -----**<br>


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**PHOTOELECTRIC SENSORS | SICK** 

**GRL18-F2452 | GR18** PHOTOELECTRIC SENSORS 

## Connection diagram Cd-087 

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


## Characteristic curve GRL18S 

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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>


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## Sensing range diagram GRL18S 

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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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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** 

**GRL18-F2452 | GR18** PHOTOELECTRIC SENSORS 

Dimensional drawing GRTE18, GRL18, GRSE18, metal, connector, straight 

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M18 x 1 2<br>a i n<br>6<br>' o r r to<br>3<br>5<br>4<br>1<br>0.16)(<br>54.62.15)( 4 52.92.08)( 2.89)(<br>35.<br>7<br>11.5 (0.45)<br>2.2<br>(0.09)<br> (0.11)<br>2.8<br>**----- End of picture text -----**<br>


Dimensions in mm (inch) 

- ① male connector M12, 4-pin 

- ② Threaded mounting hole M18 x 1 

- ③ LED indicator yellow 

- ④ LED indicator green 

- ⑤ sensitivity control: potentiometer 270° 

- ⑥ Fastening nuts (2x); width across 24, metal 

## Recommended accessories 

Other models and accessories www.sick.com/GR18 

||**Brief description**|**Type**|**part no.**|
|---|---|---|---|
|Mounting systems||||
|<q|• **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|



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**Brief description Type part no.** connectors and cables • **Description:** Sensor/actuator cable, unshielded YF2A14-050UB3XLEAX 2095608 • **Connection type head A:** Female connector, M12, 4-pin, straight, A-coded • **Connection type head B:** Flying leads • **Signal type:** Sensor/actuator cable • **Cable:** 5 m, 4-wire, PUR, halogen-free • **Application:** Drag chain operation, Zones with oils and lubricants, Robot, Drag chain operation ~~LC"~~ • **Description:** Sensor/actuator cable, unshielded YF2A14-050VB3XLEAX 2096235 • **Connection type head A:** Female connector, M12, 4-pin, straight, A-coded • **Connection type head B:** Flying leads • **Signal type:** Sensor/actuator cable • **Cable:** 5 m, 4-wire, PVC • **Application:** Uncontaminated zones, Zones with chemicals ~~rr~~ • **Description:** Unshielded STE-1204-G 6009932 • **Connection type head A:** Male connector, M12, 4-pin, straight, A-coded • **Connection systems:** Screw-type terminals • **Permitted cross-section:** ≤ 0.75 mm² ~~aie~~ 

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

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**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 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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