This is a new type of digital signal finder, it has a b anti-interference function to any current or magnetic field and other external environment, fast and accurate line checking speed, whether with or without load can be accurate positioning, communication lines, wiring and other weak current system installation, maintenance engineering and technical personnel of practical tools. Widely used in telephone system, computer net work and metal wire lines and other fields. Specifications: Color: Black / Red (Optional) Product Name: Network line finder Product Model: M469A Use Battery: 6F22 9V battery (not included) Material: ABS Interface End: RJ11, RJ45 Transmitter Size: 127 * 56.5 * 30 mm / 5 * 2.22 * 1.18 inch Transmitter Weight: 62g / 2.19oz Receiver Size: 198 * 46 * 31.5 mm / 7.79 * 1.81 * 1.24 inch Receiver Weight: 77g / 2.72oz Package Size: 225 * 125 * 54 mm / 8.86 * 4.92 * 2.13 inch Package Weight: 286g / 10.09oz Package List: 1 * Transmitter 1 * Receiver 1 * RJ11 Alligator Clip 1 * RJ11 Test Cable 1 * RJ45 Test Cable 1 * Storage Bag 1 * Headset 1 * User Manual(English)