PQWT-L Indoor Pipeline Water Leak Detector is the latest generation of intelligent water leak detector independently developed by Hunan Puqi Geologic Exploration Equipment Institute, it is designed for household pipe water leakage. This device is equipped with a triangular sensor and a square sensor. It is applied to different detecting environment like indoor floors, walls, cabinets, etc. This device achieves high accuracy by collection and analysis of leaking sound signal, effectively solving the problem of water leakage in the household pipeline.