Specification: Item Type: Water Pipe Leak Detector_x000D_Material: Aluminum Alloy_x000D_Frequency Range: 200-3000Hz_x000D_Magnification: 0-100dB Adjustable_x000D_Frequency Staging: 1-4 Staging 200-3000HZ Continuously Adjustable_x000D_Battery Type: Built In 1600mAh Polymer Lithium Battery_x000D_Voltage: 100-240V Features: 1HIGHLY SENSITIVE SENSING: Leak detector has a highly sensitive sensing, noise filtering, broaden the exploration frequency range of 200HZ?3000HZ, improve efficiency. 2FOUR LEVELS OF ADJUSTMENT: Wall leakage listen tester with metal body, four position adjustment, test depth of 1?1.5m / 3.3?4.9ft (test depth and pipe pressure size). 3ACCURATE POSITIONING: Water pipe leakage monitor is more accurate in positioning, the higher the value, the closer to the leak point, to capture different leaks. 4SENSITIVITY DISPLAY: Water pipe leak detector rotates counterclockwise to decrease the display sensitivity, and clockwise to increase the display sensitivity. 5APPLICABLE SCENARIOS: Water pipe detector is suitable for a variety of scenarios, widely used in fire fighting pipes, floor heating pipes, household pipes, car rattles, etc. PackageList: 1 x_x000D__x000D_WaterPipeLeakDetector 3 x Probe 1 x Probe Protection Cover 1 x Muffler Handle Converter 1 x Earphone 1 x Storage Box 2 x Key 1 x Power Adapter 1 x Instruction Manual