This pipe blockage tester tool set accurately locates invisible blockages and clogs inside pipes and alerts you with a buzzing sound. Working method: Uses signal strength to determine the location of the blockage. Stronger signal produces a louder alarm sound. Equipped with a signal indicator—stronger signal results in higher red light brightness. IP67 waterproof probe allows the detector to be used for detecting wall studs, metal pipes, PVC pipes, and water pipes. Features: - Determines blockage location based on signal strength - Louder alarm sound with stronger signal - Signal indicator with brightness increasing with signal strength - IP67 waterproof probe suitable for detecting wall studs, metal pipes, PVC pipes, and water pipes - Easy storage: Turn counterclockwise to fold the signal wire for space-saving - Accurately locates hidden blockages and clogs in pipes with ble alert - Adjustable sensitivity on receiver to enhance detection of the emitter signal - Includes USB cable and lithium battery for convenient charging via computer Specifications: - Name: Pipes Blockage Locating Tool Set - Material: Plastic - Color: Red + Black - Emitter specifications: - Compatible with: PVC pipes, plastic pipes, cement pipes, iron pipes, metal pipes - Model options: NF-5120 (20m), NF-5130 (30m), NF-5140 (40m) - Working frequency: 300Hz - Operating time: 10 hours - Working temperature: 0–40°C - Battery: 3.7V, 2600mAh (included) - Receiver specifications: - Detection range: 0–0.6m (metal pipes), 0–0.15m (non-metal pipes) - Sensitivity adjustment: Yes - Working frequency: 300Hz - Operating time: 20 hours - Battery: 3.7V, 1400mAh (included) - Item size: - Receiver: 360 x 65 x 40mm / 14.17 x 2.56 x 1.57in - Emitter: 360 x 300 x 45mm / 14.17 x 11.81 x 1.77in - Package size: 400 x 360 x 75mm / 15.75 x 14.17 x 2.95in - Package weight: - NF-5120 (20m): 1755g / 3.87lb - NF-5130 (30m): 2400g / 5.29lb - NF-5140 (40m): 2500g / 5.51lb Packing List: 1 x Emitter 1 x Receiver