HOUSING MATERIAL: ABS; LED DISPLAY; FUNCTIONS: RJ45 INTERNET CABLE ORDER VERIFYING, TELEPHONE LINE VOLTAGE CHECK (MAX 25V), TELEPHONE LINE VOLTAGE POLARITY CHECK, WIRING SHORTS INSPECTION, LOW BATTERY INDICATION, ADJUSTMENT FOR TRACING SENSITIVITY/VOLUME, EARPHONE JACK OUTPUT, FLASHLIGHT; SPECIFICATIONS: SIGNAL TRACING TRANSMIT DISTANCE: >1 KM, OPERATING TEMPERATURE: -10 ~40C (14 ~ 104F), OPERATING HUMIDITY: 10-95 %RH, STORAGE TEMPERATURE: -10 ~40C (14 ~ 104F); DIMENSION AND WEIGHT: TRANSMITTER 63*134*31MM - 138G, RECEIVER 40*200*32MM - 119.9G; POWER SUPPLY: TRANSMITTER 1.5V AAA*3 BATTERIES, RECEIVER 6F22 9V BATTERY; ANTI-INTERFERENCE DESIGN; PACKING LIST: 1 * RECEIVER (BATTERY NOT INCLUDED), 1 * TRANSMITTER (BATTERY NOT INCLUDED), 1 * RJ45 TEST LINE, 1 * RJ11 TEST LINE, 1 * RJ11 TEST LINE WITH CLIP, 1 *  SOFT ZIPPER CASE, 1 * INSTRUCTION MANUAL; COLOUR: BLACK � RED, LOGO & ITEM NO. PRINTING; COLOUR OF POUCH � BLACK, WITH LOGO PRINTING; COLOUR BOX PROTECTED WITH TRANSPARENT SEAL LABEL