AC 40‑300V 100A Color LCD Digital Voltmeter Ammeter Volt Amp Power Kwh Meter Features: 2. Using color high-definition LCD screen to display the data. 3.180 degrees viewing angle without dead ends. 4. With save function / memory function: When power down, the meter will automatically save the current electricity consumption. And it will read this value and continue to accumulate after power on. Specifications: Color: Black Dimensions: 79 * 43 * 48mm / 3.1 * 1.7 * 1.9 in Package weight: 100g Current measuring range: AC 0~99.99A (Current display resolution is 0.01A. when the current is more than 100A, it will display for 100.0A) Active power range:  0-45000W (When the "display range" within 0-9999.9W, the power display resolution is 0.1W; when the "display range" above 0-9999.9W, the power display range is 1W) Electric power range: 0-9999 999 kwh (When the "display range" within 0-9999.999 kwh, the display resolution is 0.001kwh; when the "display range" within 10000.00-99999.99 kwh, the display resolution is 0.01kwh; when the "display range" within 100000.0-999999.9 kwh, the electric power display resolution is 0.1kwh; when the "display range" above 999999.9 kwh, the electric power display resolution is 1kwh. ) Instruction: 1. Wire according to the wiring diagram on the picture. Connect the secondary terminal of the current transformer (Green terminal) to the blue terminal of this meter, and then lead the wire of measuring circuit across the middle hole of the current transformer. 3. Power on, and the meter will display the measured results. 4. Press the button for 5s, then all the measured and accumulated value will be cleared. Package Included: 1 x Meter Note: 2. This instrument is only applicable to the AC 50-60HZ mains power, can not be used for square wave, the inverter output and the correction is positive Hyun wave circuit measurement, or instrument will be damaged 3. The installation process can not be squeezed instrument meter LCD screen, otherwise there will be garbled / broken code situation4. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.