Detection range: 7 ... 20 mm, Light source: LED, Light type: modulated infrared light 850 nm, Signal output: 2 push pull (4 in 1)outputs, short circuit protected, reverse polarity protected, overvoltage protected, Interface type: IO Link ( via C/Q = BK ), Switching type: C/Q Pin4: NPN normally closed / dark on, PNP normally open / light on, IO Link /Q Pin2: NPN normally open / light on, PNP normally closed / dark on, Connection: M8 x 1 connector, 4 pin, Operating voltage: 10 ... 30 V DC, Ambient temperature: 40 ... 60 DegreesC ( 40 ... 140 DegreesF)OBT20 R102 2P1 IO V31