Item Type: Water Pipe Leakage Meter Product Material: ABS, Metal Battery Information: 300mAh lithium ion battery (built in battery) Probe Sensitivity: -70Ddb Maximum Audio Magnification: 20000 Times Penetration: Water pipe, steel pipe, rock, wood Answer Mode: Earphone, connect external 16 speaker Package List 1 x Detector 1 x Circular Probe 1 x Pin Probe 1 x Earphone 1 x Charging Cable 1 x User Manual 1 x Storage Bag 1MAIN PURPOSE: The detector kit is applicable to water leakage detection of various construction pipelines, convenient and practical. 2VOLUME ADJUSTMENT: Detect pipe leakage by amplifying the sound, adjust the volume with earphone, can connect 16 speaker (not included). 3APPLICABLE MATERIAL: The detector has strong permeability, which can detect water pipes, steel pipes, rocks or wood boards, with high efficiency. 4DOUBLE PROBES: The leakage detector is dual probes design, including circular and pin probe, can be switched according to requirements. 5WITH BATTERY: Equipped with 300mAh lithium ion battery and charging cable, the water leakage meter can be used anytime and anywhere.