Feature:1. Alarm Range: Waterproof high and low voltage alarm, with a low voltage alarm range of 40V1kV and a high voltage alarm range of 1kV500kV, suitable for a wide range of applications.2. No Contact: This near electric alarm can be measured without physical contact, avoiding the potential danger of direct contact with live wires and improving security of the operation.3. IP67 Protection: This voltage induction alarm has IP67 protection grade, with shockproof and dustproof structure, which can adapt to various complex environmental conditions.4. Alarm Modes: This waterproof voltage induction alarm has vibration, light, and buzzer alarm modes, which are sensitive and fast in response, greatly improving detection efficiency.5. Applications: This voltage detector alarm is widely used in telecommunication, power, meteorology, computer room, oil fields, electromechanical installation and maintenance, and other fields.Specification:Item Type: Voltage AlarmModel: ETCR1840Function: Near Electricity AlarmBattery: 1 x Lithium Battery (600mAh) (Built in Battery)Voltage Alarm Range: Low Voltage: 40V-1kV, High Voltage: 1kV-500kVFrequency: 50Hz/60HzDetection Method: Non ContactWorking Time: Continuous Working (Alarm Mode): About 8 hours; Standby Time: 6 monthsAlarm Method: Vibration, Light, BuzzerInsulation Pole: Extendable 1m / 3.3ftProtection Grade: IP67Operating Temperature and Humidity: -10-40: Below 80%RHStorage Temperature and Humidity: -10-60: Below 70%RH.Package List:1 x Voltage Alarm1 x Charger1 x Insulation Pole1 x Storage Bag