Feature:1. The product is waterproof probe, can handle all kinds of environments2. Support sensitivity adjustment, two steps make positioning more accurate3. Made of good-quality durable ABS material, with impact resistance, and scratch resistance4. Pipeline blocking tester can be used to detect steel, iron, and PVC pipes5. Equipped with 4 spare probes, which can be replaced at any time, improving work efficiencySpecification:Item Type: Wall Pipe Blockage DetectorMaterial: ABSPurpose: Battery testerBattery Properties: Built-in 18650 lithium battery, 3.7V, 1800mAhPipeline blocking tester, iron pipe, PVC pipe can be measuredUsage Method: 1. Put the signal wire and the transmitting wire end into the pipeline until the signal wire can't forward, then the position of the probe is the blocking position. 2. Turn on the transmitter power switch, the green indicator light is on. 3. Turn on the power switch of the receiver, and hold the signal receiver to detect along the approximate direction of the buried line pipe. If it is close to the inside of the pipeline, the receiver horn of the probe will make a "buzzing" sound, and the loudest part is the blockage point. Make a mark and pull out the signal line, the ground can be dealt with by cutting through the ground. 4. After continuous use for a period of time, the green light of the product starts to flash, indicating that the remaining battery can be used for about half an hour, please pay attention to timely charging.(hands turn the spool to take up and pay off)Weight: 1904 g / 67.2 oz(approx.)Line Length: Approx. 20meter / 65.6ftSize: Approx. 378 x 300mm / 14.9 x 11.8in380 x 75mm / 15 x 3inPackage List:1 x Wall Pipe Blockage Detector1 x Handheld Detector4 x Spare Probe(including 4 spare parts)1 x USB Charging CableNote:1. Please allow 0‑2 cm error due to manual meas