Feature: 1. High Sensitivity Sensor Head: This water leakage detection alarm adopts new components and advanced technology, which increases the penetration force several times and greatly improves the sound quality. 2. Effectively Filter Noise: Adopt advanced technology to effectively filter noise, reduce noise, and detect the water outlet faster. 3. Long Battery Life: Commonly used for Android charging interface, built in battery (can be repeatedly charged) 100mAh, can work continuously for 5‑7h. 4. REC3.5 Port Extension: It can be connected to the display spectrum, recorder transmitter, wireless equipment, etc., and can also be inserted into the two channel wire to record directly. 5. Portable Size: The small size of this tool is very convenient for everyday use, you can carry it in your tool bag without taking up too much storage space. 6. Widely Applicable: This tool can be used for leak detection of various building pipes such as household water pipes, cement pipes, steel pipes, etc. This leak detector is an essential tool for plumbing engineers. Specification: Item Type: Water Leak Detector Material: ABS Gross Weight: 71g / 2.5oz Color: Black Probe Sensitivity: -60Ddb Maximum Audio Amplification: 13000X Penetration: water pipe, cement pipe, steel pipe Voice Input: 32Ω earphones Power Consumption: 12mA Battery: 1 x lithium battery, 100mAh (shipped with built in battery). Package List: 1 x Detector1 x USB Cable1 x Headphone1 x Manual