Features 1、Portable high‑voltage electroscope, suitable for high‑voltage transmission lines electricity testing. 2、It is an important tool for railway and power system line maintenance and detection of residual or induced voltage. 3、No need to touch the electrified body, simple operation, safe and reliable, suitable for electric inspection personnel. 4、High‑voltage electroscope is equipped with a red LED and buzzer, which can emit sound and light alarms and is easy to identify. 5、Used for on-site high-voltage inspection, identifying the voltage level of high-voltage system, inspecting high-voltage line faults, repairing neon lamp induced voltage, etc. Specification Condition: 100% Brand New Material: ABS Features On-site high-voltage electrical inspection, identify high-voltage system voltage levels, inspect high-voltage line faults, repair neon lamp induced voltage, check residual high voltage or induced voltage, etc. Power Supply 1 x 6F22 9V Dry Battery (Battery Not Included) Voltage Gear 9 Gears Test Scope 110V-275KV Electrical Inspection Instructions Red Double Flashing LED Indicator Buzzer Beep Electrical Inspection Instructions Turn the knob to the "TEST" gear, the indicator light will light up, and the buzzer will beep Low Battery Voltage Indication When the detector battery voltage drops below 7.2V ± 0.1V, the LED indicator flashes slowly to remind you to replace the battery. Protection Level IP65 Insulation Test Insulation rod pull (not included in the product) after extension: AC220kV/rms Receiver, Detector: AC3700V/rms (Between exposed metal and plastic housing) Working Temperature and Humidity -10℃-40℃; below 80%rh Storage Temperature and Humidity -10℃-60℃; below 70%rh Package List 1 x High Voltage Electroscope (Battery Not Included) 1 x Manual