Effective detection range: 0 ... 4 m, Light source: LED, Light type: modulated visible red light , 640 nm, Signal output: 1 NPN, short circuit protected open collector, Switching type: light on, Connection: 2 m fixed cable, Operating voltage: 10 ... 30 V DC, Ambient temperature: 25 ... 60 DegreesC ( 13 ... 140 DegreesF)