... 49mm or a M49 × 1.5's gong jack.Ultrasonic Level Meter Main technical characteristics: 1, non-contact measurement, environmental protection ... . 3, can be carried out in different environments from accurate line calibration, starting and ending point range, the output module, window ... detection 1hzs Power: DC12/24 Range: 0.5~8 m Level (determined when ordering) Blind range: 10~30cm, 50cm, 70cm ( ...