Specification:Item Type: Line Blockage DetectorProduct Material: ABSBattery Model: G6F22Number of Battery Cells: 2Battery Type: Lithium Battery (shipped without battery)How to Use:1. Adjust the receiver sensitivity switch to the maximum, detecting the source around the point during the detection process.2. Slowly turn down the receiver sensitivity switch to further narrow the search point range.3. When it is narrowed to a very small range point, it is the position of the blockage point. (Note: The smaller the sensing range point is, the more accurate the blocking point is.) With care and patience, you easily can find the accurate blocking point in the detection process. Package List:1 x Line Blockage Detector1 x Receiver1 x User Manual7 x Probe7 x Tubing7 x Protector7 x Fixing Ring7 x Watch Case HolderNote:1. After the using of detector is finished, the power must be turned off immediately.2. After finding the blockage position, please pull the wire out of the tube and place it in a and place before removing the .3. When used to detect iron pipes, the detection distance is slightly reduced, but it does not affect the use.4. Please note that the new type and old type of this product will be sent randomly,and make sure you will not mind before ordering.