Photo sensor Q20NLP, polarized retroreflective 4 m, NPN, NO/NC, 10-30VDC, 2 m cable

Q20NLP is a Banner Q20 series polarized retroreflective photo sensor with a visible red 645 nm beam and a 4 m range with a BRT-84 reflector. The polarizing filter lets it detect shiny objects that would reflect an unpolarized beam back to the sensor.

• Sensing range: 4 m with BRT-84 reflector
• Output: NPN, complementary Light Operate and Dark Operate outputs, 100 mA
• Response: 850 µs ON/OFF; repeatability 90 µs
• Supply: 10-30 V DC, < 18 mA
• Housing: ABS, PMMA lenses
• Environment: IP67, -20...+60 °C
• Connection: 2 m PVC cable, 4 wires

A green LED indicator shows power; the amber one shows the output state and flashes at marginal excess gain. Sensitivity is set with a single-turn potentiometer.

Vibration tested to MIL-STD-202F, method 201A; shock to IEC 60947-5-2.