Features: Professional Pipe Blockage Detector with IP67 Waterproof Probe Accurately locates hidden obstructions in metal pipes, PVC conduits, and water lines while maintaining durability in wet environments. Features adjustable sensitivity control for precise blockage pinpointing, 20/30/40 meter wireless detection ranges, and long working time from its 2600mAh rechargeable battery via USB C compatibility. Ideal for plumbers, construction technicians, and enthusiasts requiring pipeline inspection during renovation projects or maintenance operations. Perfect for detecting embedded pipes behind wall, troubleshooting drainage systems, and ensuring safe drilling in residential/commercial construction site. Complete set includes probe accessories for multi surfaces detection, noise isolating headphones for clear signals alerts, and a portable storage bag for organized fieldwork. Specifications: Component: ABS Frequency: 300Hz Working Temperature: 10-40℃ Pattern: 20m/30m/40m Package Includes: 1pc transmitter host (including battery) 1pc receiver (including battery) 1pc double-head charging cable 1pc headphones 8 sets of transmitter probe accessories 1pc glues 1pc Instructions for use note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.