Description: 1.100% brand new 2. Streamlined design and easy to carry 3. Comes with earphones usable in nosey situation 4. Flexible and versatile interface 5. Sensitive and adjustable volume control Cable Tester for utp stp RJ45 (manual switch) Automatic effort scan for the miss ring, order cable, open and short circuit tel nc test available (Adapter required) remote test cable up to 1000 ft in length protect power switch for low power consumption High-quality protection case providers more secure protection Judge continuity of the cabin or wires Track the doors or wires, and diagnostics the breakpoint Acer the tone on the cable or wires (telephone line) Identify the state in the working phone line (clear ring, busy) Send a single solid tone or a dual alternative tone to the object cabin or wires Specification: Working current: Tester: 10mA Razer: 30mA Signal transfer mode: Digital signal Signal output level: 8Vp-p Signal transfer distance: 3Km Dimension: Tranter: 126x 49x 34mm Razer: 175x 42x 25mm Power: by 2 x DC 9V Battery (not included) Package Includes: 1 x Cable Emitter(Battery not included) 1 x Cable Receiver(Battery not included) 1 x RJ11 Cable 1 x Earphone 1 x Cable with Crocodile Clamp 1 x Instruction Manual