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...lines and cabled meters have probes that detect the water via fluid conductivity. These meters then emit an audio and visual signal to denote where the water level is. Main features of ground water level ind...
...Audio Jack 3.5 millimeters Length of cable 1.2m Volume Control Can customized Usage Mp3/cellphone /pc Sensitivity 98dB+/-3dB at 1KHz Impedance 16ohm Sample ......