1Electrical parameters measurement: AC voltage, current, active power, frequency, power factor, electrical energy;six in one. 2Power zero-clearing mode: key zero-clearing, automatic zero-clearing. 3Display type: LCD display, blue back;One screen multi-display, 4Blue backlight brightness adjustable: high light, low light, not bright. 5The built-in button of the watch head can calibrate the voltage, current error and other options by itself.
