Water Leak Detector: Underground pipe detector has a detection depth of more than 3m/9.8ft, used to locate and identify leaks in water supply pipes, easy to detect water pipe leaks, suitable for indoor and outdoor water pipes, fire hoses, heating systems, underground pipes with different picking up leaks, it is a must-have equipment for facility specialists. UNDERGROUND WATER LEAK SENSOR: The sound range of the underground water leak detector is divided into high, medium and low, which can be controlled in detail by the knob. Turning anti-clockwise decreases the display sensitivity and turning clockwise increases it. The screen displays a sound level graph to help you detect. Solve pressure pipe leakage problems by collecting and analysing leakage signals. 4 ADJUSTABLE FREQUENCY MODES: The Groundwater Leak Detector can detect noise at the source of a pipeline leak through headphones to determine the location of the leak. The frequency is divided into 1~4 levels, range 200Hz~3000Hz continuously adjustable. Suitable frequency can be selected according to the specific environment. Easy to use: the leakage detector connects to the external headphone sensor for good monitoring and accurate judgement. Suitable for use in noisy environments, shielded from external noise, to obtain good monitoring effect and accurate judgement. Packing list: water leakage detector content 1.detection host 2.earphone 3.indoor sensor 4.outdoor sensor 5.sensor handle 6.charger 7.manual 8.carrying case