ITEM NAME:AC 200-450V power meter DIN rail type digital display ammeter voltmeter V4U2 AC 200-450V power meter DIN rail type digital display ammeter voltmeter V4U2 The current DIN Din Voltage amperemetre is used to measure voltage and alternating current, and calculate the active power, the reactive power and the power factor at the same time. It works by driving the wire through the hole, especially to check the high power devices at all times, thus ensuring our safety. Display voltage, current and power simultaneously through the digital LED tube. DIN rail installation and easy measurement, just connect to power and direct the wire through the hole. Wide voltage and current measurement range. Compatible with all home appliances, allowing you to monitor their electrical.Installation Path: DIN rail (DIN rail universal step, not included). Easy to install on a DIN rail. Help to remind you to shut down high power appliances, preventing safety problems and saving electricity.