Feature: 1. Durable Iron Material: The water pipe leakage detector is made of premium iron material, which is wear resistant and durable, and has a long service life. 2. 4 Frequency Mode: The frequency is divided into 1 to 4 files, 200HZ‑3000HZ continuously adjustable. The appropriate frequency can be selected according to the specific environment. 3. Sensitivity Adjustment: The screen displays the sensitivity adjustment knob, turn it clockwise to increase the sensitivity, and turn it counterclockwise to decrease the sensitivity. 4. Working Conditions: The operating current is 60 mA and the voltage is 9 volts. Operating temperature is ‑10℃ to +50℃, working time over 30 hours. 5. Scope of Applications: This iron leakage detection tool is used to detect pressurized pipes, indoor and outdoor floor heating, dark pipes, water pipes, fire water pipes and floor heating. Specification: Item Type: Electronic Leak Detector Material: Iron Gross Weight: 3550g / 125.2oz Voltage: 100-240V Host Product Size: 14x8x3CM / 5.5x3.1x1.2in Battery (shipped with built in battery): Lithium ion battery, model 523412, 8.4V capacity 1000ma/h Measurement Object: Pressurized pipeline Magnification: 0-100dB adjustable. Frequency Binning: 1-4 files 200HZ-3000HZ continuously adjustable. Working Current: 60mA Voltage: 9 volts Operating Temperature: -10℃- +50℃ Working Hours: > 30 hours Maximum Detection Depth: 1.5m. Package List: 1 x Water Leakage Detector Host2 x Sensor1 x Listening Handle1 x Earphone1 x Charger1 x Portable Aluminum Box1 x English Manual Note: 1 Do not put water into the instrument2 Do not disassemble and touch the internal components at will3 Do not vibrate strongly4 When not in use for a long time, it should be stored in the instrument packing box5 Turn off the power while charging to avoid damage to the instrument.