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Rectangular plastic sensor housing with M12 connector and potentiometer adjustment

Sick

Sick RT-P3231 MultiTask Photoelectric Sensor PNP

SKU CH-24RY-F18G0

A photoelectric proximity sensor with background suppression, PNP output and IP67 housing for 10-30 V DC supply

  • Background suppression enables precise detection up to 900 mm
  • Infrared LED provides 250 Hz switching frequency for fast response
  • PNP output with light/dark switching offers flexible control
  • IP67 enclosure rating withstands harsh industrial environments
  • Compact 20.6 mm x 99.2 mm x 48.9 mm housing saves installation space

What this sensor does

The Sick RT-P3231 is a photoelectric proximity sensor with background suppression. It detects objects using infrared LED light and provides a PNP switching output for industrial control systems.

Sensing range and output

The sensor operates from 60 mm to 900 mm with a 20 mm light spot at 500 mm distance. It runs on 10 V DC to 30 V DC, draws 20 mA, and switches up to 100 mA at 250 Hz with a 2 ms response time.

Installation and common issues

Connection uses a 4-pin M12 male connector and the sensing distance is set via a 9-turn potentiometer. The IP67-rated ABS housing withstands -40 °C to +60 °C, but the plastic body can crack under heavy mechanical impact.

How it compares

Measured against everything we stock in Electrical Trade Tools & Kits, at today’s prices. Recalculated every night.

Price $80.99
Cheaper than about 60% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand nameSICK
Model nameSICK RT-P3231

Questions about this item

How far can the RT-P3231 reliably detect objects in a real installation?

The sensor covers a sensing range of 60 mm to 900 mm with background suppression, so it ignores objects beyond the set distance even on reflective backgrounds.

What does the M12 4-pin connector limit in practice?

The M12 4-pin connection carries the 10 V DC to 30 V DC supply and the PNP switching output rated at 100 mA maximum, capping both power and signal to that pinout.

Will the 20.6 mm by 99.2 mm by 48.9 mm housing fit on standard mounting brackets?

The compact plastic ABS body measures 20.6 mm wide, 99.2 mm high and 48.9 mm deep, matching common 20 mm sensor mounting patterns and weighing 175 g.

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