Non-Contact High Voltage Electroscope applied to on-site high voltage line electricity testing, identify voltage level of high voltage system, inspect fault of high voltage line, repair the inspect induced voltage of the neon lamp, high voltage sodium lamp, inspect residual high voltage or induced voltage, etc. 1. Model No.: ETCR1820 2. Electricity Test Range: 380V~500KV 3. Electricity Test Level: 9 gears 4. Electricity Test Indication:Audible and visual alarm 5. Protection Level: IP65 6. Power Supply: Zn-Mn dry battery 6F22, 9V