Digital Voltmeter AC Voltage Frequency Time Meter LED Display High Accuracy Voltage Indicator for 220VAC System Generator Feature:1. Multi-function function: the meter can simultaneously measure voltage, frequency, accumulated working time and current working time, very practical.2. LED display: 4 digits high bright LED nixie tube displays the measured value, which is more clear, intuitive and convenient.3. Wide Voltage Range: The meter supports AC165V to 275V, ensures wider applications. Easy to use, no additional operating power required.4. High Accuracy: Adopt excellent components, this multi-function meter has high measurement accuracy, provides reliable data for the generator.5. Perfect replacement: This LED display meter is a great replacement for the traditional indicator meter, easy to attach with conventional screws, safe, convenient and strong. Specification: Item type: digital voltmeter Material: ABS Parameter display: phase voltage V, frequency Hz, cumulative working time H, current working time RRange and accuracy: Voltage: AC165-275V (220VAC system) Frequency: 40-70HZ, class 0.5 Cumulative working time: 0-9999H, level 2.5 Description: Power consumption: maximum: 1W Operating temperature range: -20 to 75 Package List: 1 x Digital Voltmeter How to use: Install and use.