Features: 1. 100% brand new and high quality. 2. You can use it in the dark light with flashlight. 3. With an earphone support to enable service technician to work conveniently and comfortably in noisy environment. 4. Sensitive sensor, stable and reliable. 5. High quality protective case provides more secure protection. 6. Used in telecommunication network line engineering and daily maintenance, computer network line engineering, other metal wire line engineering and maintenance work Specification Transmitter Receiver Dimension 64*31*119mm/2.5*1.2*4.7in 48.6*26*177mm/1.9*1.0*7.0in Power(not included) 1.5VAAA*3batteries not include 6F229Vbattery not include SignalTracing TransmitDistanceDisplay >1km Display LED OperatingTemperature -10-40(14-104) OperatingHumidity 10-95% StorageTemperature -20-60(-4-140) Weight: Approx. 280g / 9.9oz package include 1 x Cable emitter 1 x Cable receiver 1 x RJ cable 1 x RJ45 cable 1 x Cable 1 x User manual Not include battery Note: 1. To prevent electric shock and personal injuries,please do not: . 2. Trace the cable with strong current lest personalinjuries and/or equipment damage occur. 3. Use the unit in thunder storm weather lest it resultsin personal injury and/or equipment damage. 4. To avoid the damage of the device and thedetected, please pay attention to the following: 5. Do not use the cable order verifying function for thecable that has electricity. 6. Take out the batteries if the product is expected notfor use for long time, to avoid erosion of the batteryleakage which may result in poor battery contact. 7. Do not dismantle the device. Please contact thelocal dealer to repair the product by authorizedtechnicians.