Features: _x000D_ Measurement of electrical parameters: AC voltage/ current/ active power/ frequency/ power factor/ energy,6 in 1. _x000D_ Power zero-clearing mode: key zero-clearing, automatic zero-clearing. _x000D_ Display Type: LCD display, blue backlight;-Multi-screen display, "7 kinds of display modes" optional. _x000D_ Blue backlight brightness adjustable: highlight, low light, not bright. _x000D_ The voltage, current error and other options can be calibrated by the button itself. _x000D_ Displays updated values for different working environments. _x000D_ display accuracy can be set:3-bit,4-bit; applicable to different requirements power down data saving function. _x000D_ The AC voltage, current, power and electric energy are all designed by automatic shift of decimal point has the functions of voltage, current, power upper and lower limit alarm and timeout alarm, besides the buzzer alarm, there is the optical coupling alarm output control function. _x000D_ _x000D_ Specification: _x000D_ Measurement range ACV130-500V; ACA0-100A _x000D_ 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 _x000D_ The resolution of current less than 10A is 0.001 A;Over 10A, the resolution is 0.01 A _x000D_ Measurement accuracy 0.5% 2 digits _x000D_ Measurement speed about 2 times per second _x000D_ Active power 0-9999 KW _x000D_ Frequency 45.00-65.00 Hz _x000D_ Power Factor 0.000-1.000 _x000D_ Power 0.000-9999 KWh _x000D_ Operating temperature -10 ~ + 50 _x000D_ Working humidity 10 ~ 80% (without condensation) _x000D_ Working pressure 80 ~ 106 kPa _x000D_ _x000D_ _x000D_ _x000D_ Package List: _x000D_ 1 * Multi-function intelligent watch head _x000D_ 1 * Mutual inductance coil _x000D_ _x000D_ _x000D_ Note:_x000D_ As different computers display colors differently, the color of the actual item may vary slightly from the above images. _x000D_ _x000D_ _x000D_ Operation Setting Manual: _x000D_ Code Nmae Description _x000D_ 1-CU Calibrate Voltage Calibration voltage error _x000D_ 2-CA Calivrate Current Calibration current error _x000D_ 3-SP Display Speed S: Standard speed update display value_x000D_ L: Slow update display value_x000D_ F: Fast update display value _x000D_ 4-En Power Option REA: Resumption_x000D_ 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;_x000D_ CLE: Accumulated electric power manual zero clearing_x000D_ ACC: After the power on, the accumulated electric energy value will not automatically clear the zero, has been accumulated _x000D_ 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_x000D_ A: Full automatic, when the alarm start-up value back within the scope, will automatically remove the alarm _x000D_ 6-oU Over Voltage Value Set voltage alarm upper limit _x000D_ 7-LU Voltage Floor Set Voltage Alarm Lower Limit _x000D_ 8-oA Over Current Value Set current alarm upper limit _x000D_ 9-LA Current Floor Set Current Alarm Lower Limit _x000D_ A-oP Over Power Value Set power alarm upper limit _x000D_ b-LP Power Floor Set Power Alarm Lower Limit _x000D_ C-ot Over Time Alarm Countdown alarm function,00:00-99 hours 59 minutes;Time-out alarm and upper and lower limits alarm can only be double-checked _x000D_ d-on Default Optical coupling state H: No start alarm time coupling output for high-level, that is, open-circuit state, post-start output low-level_x000D_ L: No start alarm time coupling output for low level, that is, short circuit state, post start output high level _x000D_ E-St Starting Delay 0-9999 seconds, instrument never alarm state to alarm state switch output delay time;This start-up alarm will be ignored when the alarm duration is