•Network cable proofreading: Insert the RJ45 network cable into the transmitter and receiver interface,and the transmitter press the "Align" button. Line sequence light determines a short circuit in the circuit •Crystal Port: Suitable for RJ45 network cable interface,RJ11 interface,dual core telephone line can be connected through crocodile clip •Measure DC level function: Press and hold "Find Line" and "Switch" for more than 2 seconds,then insert the crocodile clip into RJ11. Clamp both ends of the power supply and press the button until the "line sequence light" flashes •Support earphone: Equipped with an earphone,adjustable volume for noisy environments •Flashlight function: In a dark environment,turning on the flashlight makes it easier to work Specifications: •Battery used: 6F22 9V battery (not included) •Flashlight: built-in flashlight •Weight: transmitter 62g/receiver 77g •Telephone line search function: support •Power cable line search: support •Low voltage prompt: support •Open circuit and short circuit test function: support •Interface: RJ11/RJ45 •Material: ABS plastic process •Network line search function: support •Network cable calibration function: support •DC level test function: support •Single and double audio switching: support •Lighting/shielded wire: support •Automatic shutdown: about 1 hour after power on,the line finder will automatically enter the shutdown state •Headphone function: in a noisy environment,you can plug in headphones to operate without external interference Package included: •1 x Transmitter •1 x Receiver •1 x RJ11 to Alligator Clip •1 x RJ11 Test Cable •1 x RJ45 Test Cable •1 x Storage Bag •1 x Headphone •1 x English User Manual