Effective detection range: 0 ... 3.5 m, Light source: LED, Light type: modulated visible red light , 626 nm, Signal output: 2 push pull (4 in 1)outputs, short circuit protected, reverse polarity protected, overvoltage protected, Switching type: light/dark on, Connection: M8 x 1 connector, 4 pin, Operating voltage: 10 ... 30 V DC , class 2, Ambient temperature: 20 ... 55 DegreesC ( 4 ... 131 DegreesF)