Sick
Sick GRL18S-N1331 M18 Cylindrical Photoelectric Sensor NPN 10-30V DC IP67
Cylindrical photoelectric retro-reflective sensor with NPN output, 10–30 V DC supply, IP67 metal housing and 2 m cable
- Detects objects up to 7.2 m away with PinPoint LED
- NPN light-switching output delivers 100 mA at 1 kHz
- IP67-rated nickel-plated brass housing withstands dust and water
- Operates reliably from –25 °C to +55 °C on 10–30 V DC
- 2 m PVC cable with 3-wire connection simplifies installation
Sick GRL18S-N1331 M18 Cylindrical Sensor
The Sick GRL18S-N1331 is a cylindrical photoelectric retro-reflective sensor designed for industrial automation tasks. It uses a visible red PinPoint LED to detect objects at distances up to 7.2 metres with the PL80A reflector. The M18 metal housing carries an IP67 rating for harsh environments. This unit suits engineers and technicians specifying presence detection on conveyors or packaging lines.
Check Supply Voltage and Output Compatibility
Verify that your control system provides a 10 to 30 V DC supply within the specified ripple limits before wiring this sensor. The switching output is NPN light-switching with a maximum load of 100 mA, so the connected input must accept that logic type and current level. A 2-metre three-wire PVC cable is fitted; ensure the cable length and routing suit your cabinet layout. The operating temperature range spans –25 °C to +55 °C.
Ideal for Simple Retro-Reflective Detection
This sensor fits applications needing a robust M18 axial-beam device with no teach-in or potentiometer adjustment. It is not suited for installations requiring background suppression, polarised retro-reflection for shiny targets, or faster response times below 500 microseconds. Buyers who need a different sensing principle, connector termination, or higher switching frequency should look at alternative models.
Highlights
- Detects objects up to 7.2 m away with PinPoint LED
- NPN light-switching output delivers 100 mA at 1 kHz
- IP67-rated nickel-plated brass housing withstands dust and water
- Operates reliably from –25 °C to +55 °C on 10–30 V DC
- 2 m PVC cable with 3-wire connection simplifies installation
Specifications
| Brand | SICK |
|---|---|
| Model | SICK GRL18S-N1331 |
Questions about this item
What comes in the box and do I need to buy a reflector separately?
The sensor ships with two fastening nuts. A PL80A reflector is required for operation and is not included.
The sensing range is listed as 0.06 m to 6 m — is that the practical limit I should design for?
Yes, that is the operating range with the PL80A reflector. The maximum possible range reaches 7.2 m under ideal conditions.
The output is NPN light-switching — what voltage level appears on the wire when the beam is made?
The output pulls high to approximately the supply voltage when the beam is received and drops to about 3 V when interrupted.
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