... changes.power supply:DC24V ±5%: For four-wire system, and the power supply current should not ... less than 80mA.AC85~265V:Only for four-wire system and the remote version series, and ... supply current should not be less than 50mAFour-wire system: Either the power supply or signal output ... advanced function.(plastic shell)HBLU-P Integrated 4-wire Ultrasonic Level Sensor Technical parameters: Measuring range: ...