1. 220V withstand voltage, anti-burning, anti-interference, strong signal
2. Automatic and efficient scanning of missing lines, random lines, open circuits and short circuits
3. Low power consumption protection power switch
4. Tracing cables or wires, diagnosing breakpoints
5. Receive audio signal on cable or wire (telephone line)
6. Identify the status of the working phone line (clear ringing, busy)
7. Send single or double alternating tones to the subject cable or wire

parameter:
1. Working current: Tester: 10mA Receiver: 30mA
2. Signal transmission mode: digital signal
3. Signal output level: 8Vp-p
4. Signal transmission distance: 3Km
5. Dimensions: Transmitter: 12.5 x 4.7 cm Receiver: 18 x 4 cm
6. Power: 2 x DC 9V batteries (not included)

Package Included:
1 cable transmitter
1 wired receiver
1 x RJ11 cable
1 x RJ45 cable
1 headset
1 x cable with alligator clip
1 x Storage Bag