... :12.6VDC 350mA Output:RS485,4~20mA Ultrasonic Level Sensor UE3000 HOLYKELL small blind precision ultrasonic sensors, designed for ... a M49 × 1.5's gong jack.Ultrasonic Sensor Main technical characteristics: 1, non-contact measurement, environmental protection, safety, convenience. 2, ... the network inspection (optional) 7, can be directly measured liquid in the weight of Level value (weight value) can ...