This water leak detector locates leaks in pressure pipes by collecting and analyzing leakage signals. It is designed for indoor and outdoor water pipes, fire protection pipes, and heating pipes, helping technicians and property owners find leak sources faster and make informed decisions. Key benefits Detects and analyzes pipeline leakage noise to help locate leak points and reduce time spent searching. Four frequency modes with continuous adjustment allow selection of the listening band for different environments, improving detection accuracy. External headphone sensor and headphone monitoring provide clear sound isolation for accurate onsite judgment, including outdoor conditions. Visual sound level graph on the screen assists interpretation and confirms signal strength while the knob gives fine control over , medium, and low ranges. Important features and specifications Function: Collects and analyzes leakage signals to identify pipeline leaks. Frequency modes: Four selectable levels, continuously adjustable across 45 to 5000 Hz to match ambient noise and pipe conditions. Sensor and listening: External headphone sensor for direct monitoring through headphones to pinpoint leak location and reduce interference from background noise. Controls and display: Knob for fine control of frequency bands and sound range; screen shows a sound level graph to support testing decisions. Compatibility: Suitable for indoor water pipes, outdoor water mains, fire protection systems, and heating pipes where pressure pipe leakage needs investigation. Performance: Designed to provide clear listening and accurate judgment by isolating noise and highlighting leak signals. Typical applications Residential: Locate leaks in underfloor heating or concealed domestic water lines without invasive demolition. Municipal and outdoor: Trace leaks along outdoor water mains or service lines using frequency adjustment to overcome ambient noise. Commercial and industrial: Inspect fire protection piping and heating systems to identify pressure pipe leakage points before extensive damage occurs. Operation tips Start with a mid frequency and adjust up or down while monitoring the sound level graph to find the clearest leak signal. Use the external headphone sensor and headphones to isolate pipe noise from environmental noise, especially outdoors. Fine tune the knob between , medium, and low ranges to separate leak sounds from other mechanical or flow noises. This detector provides a practical combination of adjustable frequency control, clear headphone monitoring, and graphical feedback to support accurate leak locating on a variety of pipeline systems.