You can have a try.<br> Features:<br> Working method: According to the signal strength to determine the location of the blockage.<br> S-tronger signal with louder alarming sound.<br> Equipped with signal indicator, the signal is s-tronger, the red light with higher brightness.<br> IP67 waterproof probe, this detector can be used to detect wall studs, metal pipes, PVC pipes and even water pipes.<br> Easy storage, turn counterclockwise to fold the signal wire easily, saving space.<br> It can accurately locates invisible blockage, clogging inside the pipes and reminds you with a buzzing sound.<br> Adjustable sensitivity, the receiver can increase the sensing ability to the emitter by adjusting its sensitivity.<br> Equipped with a USB cable and lithium battery, it is convenient to be charged by computers or c-harge pal.<br> Specifications:<br> Name: Pipes Blockage Locating Tool Set<br> Material: plastics<br> Color: red + black<br> Emitter specification:<br> Scope of application: PVC pipes, plastics pipes, cement pipes, iron pipes, metal pipes<br> Model: NF-5120(20m), NF-5130(30m), NF-5140(40m) (optional)<br> Working frequency: 300Hz<br> Work hours: 10H<br> Working temperature: 0-40<br> Battery: 3.7V, 2600mAh battery (included)<br> Receiver specification:<br> Distance Range: 0-0.6m (Metal pipes); 0-0.15m (Non-metal pipes)<br> Sensitivity adjust: YES<br> Working frequency: 300Hz<br> Work hours: 20H<br> Battery: 3.7V, 1400mAh battery (included)<br> Item size:<br> Receiver: 360 * 65 * 40mm / 14.17 * 2.56 * 1.57in<br> Emitter: 360 * 300 * 45mm / 14.17 * 11.81 * 1.77in<br> Package size: 400 * 360 * 75mm / 15.75 * 14.17 * 2.95in<br> Package weight:<br> NF-5120(20m): 1755g / 3.87lb<br> NF-5130(30m): 2400g / 5.29lb<br> NF-5140(40m): 2500g / 5.51lb<br> Packing List:<br> 1 * Emitter<br> 1 * Receiver