Overview: Automatically scan mode, rapidly testing, the streamline shape is in accordance with the design of somatology Durable design, working well even in construction location Super handy device ensures your good mood Cable Tester for RJ11, RJ45, 10/100 Base-T & telephone cable éˆ¥ï ½ etc Automatic efficient scan for the miss wiring, disorder cable, open & short circuit Grounding test available 9 LEDs to indicate which wire whether open or not on both remote & master unit Efficient scan for the miss wiring, disorder cable, open & short circuit as well as crossover circuit Remotely test cable support (remote kit included) Switch on button available Powered by 9V battery (not include) Specification: Weight Approx:58g Size Approx:9.2 x 5.9 x 2.2