... Output:RS485,4~20mA Ultrasonic Level Meter BS/CS Series Small Blind Precision Ultrasonic Level Sensors---- ... M49 × 1.5's gong jack.Ultrasonic Level Meter Main technical characteristics: 1, non-contact measurement, ... 1hzs Power: DC12/24 Range: 0.5~8 m Level (determined when ordering) Blind range: 10~30cm ... 50cm, 70cm (corresponding range: 0.3,0.5,1 m) Accuracy range: 1 ~ 3mm Operating temperature: 0 ~ ...