Power supply DC 20-30V Load current DC:200mA Residual voltage ≤5V Consumption current ≤25mA Detect object 12×12×1 A3 iron Repeat accuracy ≤3% frequency 300Hz Ambient temperature -20...70℃ Shell material Copper Protection grade IP67 Temperature drift ≤±10% Protection circuit Reverse polarity protection Indicator LED Hysteresis 1...20% Connection M12 Connector Housing size M12×1×90 http://www.sensorsfactory.com/