Wide measuring rangeVoltage: AC 80~300V, current: AC 0~99.9A, with high accuracy of 1% 2 digits, measuring speed: 2 times per second, Operating temperature: -10 ~65/14F~149F. Precise CTDigital voltmeter ammeter equipped with 1 precise current transformer. No need to buy another CT. Two-color displayVoltage and current can be displayed with different colors on the LED screen, red for voltage, green for current . It's clear and pleasant to read. Ultra small size79*43*42mm. No additional individual power supply, this Voltmeter can be installed anywhere flexibly. More InformationMade of ABS material, this AC Voltmeter Ammeter is flame retardant for safe use. Note: The AC current meter is only suitable for pure AC 50-60HZ power supply and can NOT be used for square wave, inverter output and power circuit measurement ;modified sine wave, otherwise the meter will be damaged. Main specifications 1. Measuring accuracy: 1% plus or minus 2 words 2. Display: Voltage display: 0.39 inch 4-digit red LED digital tube, current display: 0.39 inch 4-digit pure green LED digital tube. 3. Measuring range: AC voltage: AC80-300V (single phase) AC current: AC0-100.0A, when the measurement current is less than 10A, the current display resolution is 0.01A, and when the current of measurement is greater than 10A, the display resolution The rate is 0.1A, the range is automatically converted (the decimal point is automatically shifted) true RMS measurement 4. Power consumption: 0.2 VA 5. Measuring speed: approximately 2 times per second 6. Dimensions: 79 (length) * 43 (type/height) * 42 mm (thickness) 7. Installation size: 76*39mm (embedded installation) 8. This meter is only suitable for AC 50-60HZ pure mains power supply. It cannot be used for square wave, inverter output and wave correction sine wave measurement, otherwise the meter will be permanently damaged! 9. The transformer is separated from the instrument, and the transformer can be installed according to the actual measurement position. (That is, the lead wire can be arbitrarily extended to the ideal position of the device and installed) Delivered quantity: 1 piece