Features 5-in-1: The multifunction measuring tool can be used to measure voltage, current, power factor, power, electrical energy. Change Automatically: The measurement resolution can change automatically. With overload alarm function, when the actual value exceeds the preset value, the backlight will flash to let you know in time. You can set the power limit as required. LED Display: The multifunction energy meter can easily read the displayed data, providing you with an excellent visual experience. LCD HD display combined with backlight function, easy to reading. LED Digital Tube: Active power, electric energy (electricity) and power factor adopt 5-digit, green 0.32 inch LED digital tube. Voltage display, current display adopts 4-digit red 0.32 inch LED digital tube. Reliable: High measurement accuracy, up to 1% ± 2-digit. With power-off storage function, all parameters are automatically stored in case of power-off. Specification: Item Type: Multi-Function Energy Meter Optional Voltage & Current: 80~300V 100A, 200~450V, 100A Measuring Range: AC Voltage: AC80.0-300.0V (or AC200.0-450.0V, users check according to need when ordering). Please select 80~300V voltage for 220V measuring; Please select 200-450V voltage for 380V measuring. 200-450V if for 220V voltage, when the voltage is lower than 200V the meter does not work. AC Current: AC0.00-100.0A, the display resolution is 0.01A when the measurement current is less than 100A, and the current display resolution is 0.1A when the measurement current is greater than 100A, the range is automatically converted. Active Power: (measuring voltage AC80.0-300.0V) 0.0-30000W (AC200.0-450.0V: 45000W) Electric Energy: 0.000-99999Kwh, automatic conversion of decimal point Power Factor: 1.000-0.000 Measuring Speed: About 2 times per second Use and Wiring Method: 1. According to the wiring diagram of the drawing, connect the secondary end (green lead) of the current transformer of the instrument to the blue terminal of the meter, and pass the wire of the measuring circuit once through the middle hole of the current transformer. 2. Connect the lead of the voltage measurement to the green terminal of the meter. Then power on to measure the voltage. Start reading the measurement results. Package List: 1 x 5-in-1 Meter with Current Transformer 1 x User Manual Package List 1 x 5-in-1 Meter with Current Transformer 1 x User Manual