Product Description

Function and Features 1. To scan and find quickly the line pairs what you need among the numerous lines. 2. To test rapidly the point of open or short circuit and detect the line sequence. 3. To test the circuit status: a). to test the direct-current level and determine the positive or negative polarity b). to test the ring-current signal c). to test the opening or short circuit in line. 4. To adjust the sensitivity by adjusting the volume. 5. With a earphone function, you can put on the earphone for working while it is noisy. Running current: emitter≤*0mA, Receiver≤*0mA. Power requirement: DC, 9V superposition battery Signal distance: ≥ ***0M About security: safety in use( you can directly connect the probes with the naked wire lines for testing)