Features Comprehensive Electrical Measurement: Accurately measures voltage, current, active power, energy, frequency, and power factor, providing essential data for efficient energy management Overload Alarm Alerts: Features an alarm system that activates when power exceeds preset thresholds, ensuring safety and preventing equipment damage Customizable Alarm Thresholds: Allows users to set specific power alarm thresholds, offering personalized monitoring for various applications Easy Energy Reset Function: Quickly reset energy data with a simple key press, making it convenient for daily energy tracking and monitoring Data Retention During Power Loss: Automatically stores measurement data when power is lost, ensuring you never lose critical information during outages Features: 1、Easy Setting: Intelligent digital voltmeter, upper and lower limit alarm output, and AC DC universal input can be ly set. 2、Various Function: This instrument has digital filtering function, range change, decimal point setting, upper, lower, and interval alarm relay output. 3、Reliable Alarm: The relay alarm output includes power on alarm supprion, power on delay alarm, and alarm delay output alarm output delay. 4、Transmission Output: Able to transmit the signal, transmission output has the form of voltage output to other devices. 5、Quick to Install: Comes with a compact size and a light weight as well, the digital voltmeter is very convenient to install within several minutes. Specification: Item Type: Digital Voltmeter Material: ABS Measurement Accuracy: 0.8%+5d AC, 0.5%+5d DC. Response Frequency: 45-400Hz, for AC only. Working Power Supply: 85-265V AC, power consumption l than 3VA. Working environment: -10℃~50℃, humidity below 90℃rh. Measurement speed: 2-3 times per second. Package List: 1 x Digital Voltmeter 2 x Accessory Package List 1 x Digital Voltmeter 2 x Accessory