1、Measurement of electrical parameters: AC voltage/ current/ active power/ frequency/ power factor/ energy,6 in 1. 2、Power zero-clearing mode: key zero-clearing, automatic zero-clearing. 3、Display Type: LCD display, blue backlight;-Multi-screen display, 4、Blue backlight brightness adjustable: highlight, low light, not bright. 5、The voltage, current error and other options can be calibrated by the button itself. Features: Power zero-clearing mode: key zero-clearing, automatic zero-clearing. Blue backlight brightness adjustable: highlight, low light, not bright. Displays updated values for different working environments. display accuracy can be set:3-bit,4-bit; applicable to different requirements power down data saving function. Specification: Measurement range ACV130-500V; ACA0-100A Resolution When the voltage is less than 100V, the resolution is 0.01 V; when the voltage is greater than 100V, the resolution is 0.1V The resolution of current less than 10A is 0.001 A;Over 10A, the resolution is 0.01 A Measurement accuracy 0.5% ± 2 digits Measurement speed about 2 times per second Active power 0-9999 KW Frequency 45.00-65.00 Hz Power Factor 0.000-1.000 Power 0.000-9999 KWh Operating temperature -10 ~ + 50 ℃ Working humidity 10 ~ 80% (without condensation) Working pressure 80 ~ 106 kPa Package List: 1 * Multi-function intelligent watch head 1 * Mutual inductance coil Note: As different computers display colors differently, the color of the actual item may vary slightly from the above images. Operation Setting Manual: Code Nmae Description 1-CU Calibrate Voltage Calibration voltage error 2-CA Calivrate Current Calibration current error 3-SP Display Speed S: Standard speed update display value L: Slow update display value After the power, if there is no electricity generation, will always show the power before the power supply accumulated;When the power generation, the display screen flash two times, before the power cut down the accumulated energy value will be automatically zero, and from the beginning of the accumulation; CLE: Accumulated electric power manual zero clearing ACC: After the power on, the accumulated electric energy value will not automatically clear the zero, has been accumulated 5-ty Alarm Type S: Semi-automatic, as long as the alarm start, regardless of the value after the start of no change, will always alarm, unless someone for any key to remove the alarm will stop Y: All settings restore factory value