WTB16I-24162120A00
Small photoelectric sensors - W16 - Supply voltage 10-30VDC - Push-pull: PNP/NPN - Factory setting: Pin 2 / white (MF): NPN normally closed (dark switching), PNP normally open (light switching), Pin 4 / black (QL1 / C): NPN normally open (light switching), PNP normally closed (dark switching), IO-Link