Specification:Product Name Inductive Proximity SwitchModel SN04-NTheory Inductive Type SensorWire Type DC 3 Wire Type (Brown, Black, Blue)Switch Appearance Type Angular Column TypeOutput Type NPN, NODetecting Distance 4mmVoltage DC 10-30VCurrent Output300mAResponse Frequency 150HzDetect Object IronSize 36 x 18 x 18mm/1.4'' x 0.7'' x 0.7''(L*W*H)Cable Length 1.1M/43.3''External Material ABS PlasticNet Weight 37gColor Blue, BlackPackage Content 1 x Inductive Proximity Switch