Description DIY Supplies: ELECTRIC 4-in-1 DIN Rail AC Meter 110V 220V 100A Voltage Current KWH Electric Energy Meter VOLT AMP Voltmeter Ammeter Wattmeter Function: Measure AC voltage, current, active power, energy and display with LCD. Display Interface: BTN LCD with wide viewing angle: voltage + current + active power + energy + white backlight Backlight Control: The backlight can be turned on or off by short pressing the button Reset Energy: Long press the button for over 3 seconds until energy data flashes, then release the button, short press the button again to reset the energy, otherwise after 3 seconds it stops flashing and the energy is not reset. Data Storage: When the power is turned off, the energy data and backlight status can be saved. Rated Voltage 50-300V 50/60Hz DIY Supplies: ELECTRIC Meter Type: Digital Only Power Supply: AC Operating Temperature: Normal Model Number: D52-2066 Color: White Material: Plastic Size: 78 x 34 mm Package Contents: 1 x 4-IN-1 DIN Rail AC Meter Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture to differ slightly from the real one. The allowed measurement error is +/- 1-3 cm.