GoolRC FWT21 - RJ11 Continuity Test

This Telephone Wire Tracker is easy to operate with smooth appearance. It's a multi-functional handheld cable testing tool to determine whether the cable line is continuous. It can identify the state in the working telephone line(clear,ring,busy). A professional & safe tool for wireman. Specifications: Brand: BSIDE Model: FWT21 Material: ABS Plastic Color: Black Audio Signal: 1.5kHZ Receiving Frequency Range: 100Hz-300kHz Receiver Battery: 1 * 9V 6F22 Battery (Not Included) Emitter Battery: 1 * 9V 6F22 Battery (Not Included) Receiver Size: 238 * 43 * 26mm / 9.4 * 1.7 * 1.0in Emitter Size: 145 * 35 * 25mm / 5.7 * 1.4 * 1.0in Receiver Weight: 72g / 2.5oz Emitter Weight: 65g / 2.3oz Package Size: 28.3 * 12.5 * 4cm / 11.1 * 4.92 * 1.85in Package Weight: 262g / 9.3oz Package list: 1 * Transmitter(FWT21 Sender) 1 * Receiver 1 * Carrying Bag 1 * User Manual