Features Automatic: The network tester automatically power on when plugged into the network cable, and automatically power off when unplugged, reducing power consumption and providing longer standby life. Main Purpose: The network tester can test the corresponding cables 1, 2, 3, 4, 5, 6, 7, 8 and G, and check the continuity of the cables, such as open circuit, short circuit and crossover. Flexible Use: The network tester supports shielded and unshielded network cable testing, and is flexible for a variety of network cables. POE Burn Protection: Network tester with POE burn protection, effectively avoid accidentally inserting powered devices in the test, to ensure the chip away from damage. Sensitive Response: The network tester enters standby mode when the battery is installed, and test results can be obtained quickly when the cable is inserted. Specification: Item Type: Ethernet Wire Tester Material: ABS Battery: 1 x 6F22 9V battery Battery Capacity: 240mAh (shipped with matching battery) Package List:1 x Ethernet Wire Tester 1 x Instruction1 x Battery Package List 1 x Ethernet Wire Tester 1 x Instruction 1 x Battery