Feature: 1. Powerful Sensitivity: ‑70Ddb probe head sensitivity allows users to detect tiny leakages in wall in a timely and accurate manner, helping them to identify and solve problems early, avoiding greater losses caused by water leakages. 2. Enhanced Amplification: 20000 times sound amplification function enables the water leakage detector to amplify even the faintest sounds of leaks, ensuring users can hear them clearly and increasing detection accuracy. 3. Penetrating Capability: The leakage detector can penetrate materials such as water pipes, cement pipes, and steel pipes without damaging the wall, making it versatile in detecting leakage inside pipes. 4. Excellent Listening Experience: Equipped with 32Ω earphones and the option to connect to a 16 ohm speaker for clearer detection sounds, making this water leakage tester easier for users to determine the presence of leakages. 5. 300mAh Battery: Built in 300mAh lithium ion battery for the water leakage detector provides long lasting usage without the need for frequent charging, greatly enhancing user experience. Specification: Item Type: Water Pipe Leakage Monitor Material: ABS Sensitivity of Probe: -70Ddb Maximum Sound Amplification: 20000X Penetrability: Pipes, Cement Pipes, Steel Pipes Receiving Way: 32Ω Earphone, can be connected to 16Ω loudspeaker Battery Type: Built in 300mAh Lithium ion Battery . Package List: 1 x Leakage Detector 1 x Circular Probe 1 x Needle Probe 1 x Earphone 1 x Data Cable 1 x User Manual 1 x Storage Bag