Description: New appearance, equipped with a lanyard is more convenient to carry. PUNENG can be an earlier developer devote to the instruments, stability and anti-jamming capabilities are very impressive. Improve the test results at the state of power on. 8 light test, which is not have the feature compared with the ordinary device. Telephone wire finding function. Network wires finding function. Electric wire finding function. Open circuit or short cicuit testing function. DC level testing function. Telephone lines signal detect. Low voltage alarm function. Specifications: Power Spec: DC, 9V Battery (excluded) Maximum Power Current: Transmitter: 20MA, Receiver: 100MA Signal transmission format: Multi-frequency pulse