FEATURES: 1. TDR & Intelligent Bridge Measurement Wave shape comparisonBlind zone test distance is less than 1mVisual fault locator (VFL) option for quick and Easy troubleshooting 2. Low voltage warning, automatic power off and energy-save design 3. Large LCD display, backlight display Pulse mode: Maximal range(km): 15 Fault Test types: Line break and mix Test dead zone: <1m Signal source character: >40v Bridge mode: Maximal range (km) Loop impedance <2Kohm(15km for 0. 5 core line) Fault Test types: Earthing, immersing, bad insulation Test dead zone: <5m Signal source character: >100V General specifications Display: 114*64 Weight (kg): 0.9 Dimension (mm): 280*175*205 Battery: 7.2V rechargeable Li+ battery Battery working duration (h): 10 Low voltage warning: <9.7V