About the product1. This is a professional network cable detection equipment, designed for wires tracking. 2. Can help you to find the cable from a plenty of wire cable quickly and efficiently. 3. It is a necessity instrument in the routine maintenance of network cables, communication cables, metal line construction projects 4. The transmitter is powered by 1.5V 3 x AAA batteries (not included) 5. The receiver is powered by 6F22 9V battery (included)Functions1. Long distance wiring tracing 2. Internet cable order verifying 3. Wiring voltage existence inspection 4. Wiring voltage positive or negative characteristic measuring. 5. Wiring shorts inspection 6. Low battery indication 7. Tracing sensitiveness and volume adjusting 8. Headphone jack output 9. FlashlightPackage Contents- 1 x Transmitter - 1 x Receiver - 1 x RJ11 Crystal Head Wiring - 1 x RJ45 Crystal Head Wiring - 1 x Alligator Clip Wiring - 1 x English User Manual - 1 x 6F22 9V BatterySpecification: General Signal Tracing Transmit Distance >1km Operating Temperature -10 ~ 40 Degree Celsius Storage Temperature -20 ~ 60 Degree Celsius Operating Humidity 10-95% Transmitter Size 119mm x 64mm x 31mm Transmitter Weight 119.2g Receiver Size 177mm x 48.6mm x 26mm Receiver Weight 68.8g Package Weight One Package Weight 0.30kgs / 0.67lb One Package Size 23cm * 13.5cm * 6.5cm / 9.06inch * 5.31inch * 2.56inch Qty per Carton 20 Carton Weight 5.60kgs / 12.35lb Carton Size 65cm * 30cm * 30cm / 25.59inch * 11.81inch * 11.81inch Loading Container 20GP: 455 cartons * 20 pcs = 9100 pcs40HQ: 1058 cartons * 20 pcs = 21160 pcs