Brand N/A Model CHL8288 Quantity 1 Color Red + Grey Material Plastic housing Application Telephone wire network wire and electric wire finding function. Open circuit and short circuit testing direct circuit level testing low-voltage alarm earphone sound adjustment spotlight and energy saving functions. Other This product is CHL8288 multi-purpose lines communication scanning and testing device. Except the telephone line network cable electric line functions it also has these following functions: open circuit and short circuit testing direct circuit level testing low-voltage alarm earphone sound adjustment spotlight and energy saving functions. Applies to telecommunication office network engineering company and other companies which need to use electric lines. This product needs two 9V batteries (included); Max current of the transmitter: 10mAh; Max received current of the receiver: 30mAh; Signal transmitting format: multi-frequency pulse; Signal output electricity state: 8 V p-p; Signal transmitting distance: more than 3 kilometers. This product can break through simulation type signals automatically switch cable scanning and cable checking it is really the line tracker of the most complete functions. Packing List 1 x Transmitter 1 x Receiver 1 x RJ11 telephone cable (19cm) 1 x Crocodile clip adapter cable (18cm) 1 x RJ45 network adapter cable (20cm) 2 x 9V battery 1 x Portable tool bag 1 x Earphones (65cm-cable) 1 x English user manual