[Digital Multimeter] Digital multimeter can measure DC and AC voltages and currents, resistance, diodes and temperature. With high accuracy, high reliability, clear reading, overload protection, safe and easy to use. [Wide Application] Electric Ethernet wiretracer is widely used for elephone system, computer network, BNC cable, security monitoring, communication wire, integrated wiring and more, essential tool for electrician. [Backlit LCD Display] Electric network cable tester has equipped with large LCD display with backlit, easy to read even in the dark. The display and receiver are both designed with lights making it convenient at night. [POE Testing] Ethernet wire tracer can be used for POE testing which can check the cable mapping polarity and voltage of POE network switches. You can find the network ports by the flashing lights on the Hub and Switch. [Network Cable Tester] Network cable tester with fast positioning function can measure network cable lengths (up to 500M/1640FT), shorts and breaks in real time. It can trace and locate underground or in-wall wires.