The main technical parameters:

Voltage AC85V~265V Power consumption <1.5W operating frequency 45~65Hz
Power measurement range 0~999.9W Power resolution 0.1W Power measurement Accuracy 0.5%FS
Voltage input range AC2V~275V Voltage resolution 0.1V Voltage measurement Accuracy 0.5%FS
Current input range AC0~4A Current resolution 0.001A Current measurement Accuracy 0.5%FS
Power factor range 0~1.000 Power factor resolution 0.001 Power factor Accuracy 0.5%FS
Frequency range 10.0~99.9Hz Frequency resolution 0.1Hz Frequency measurement accuracy 0.5%FS

Annual electricity consumption 0~99999.9
Kwh/year Annual electricity resolution 0.1kwh/year Annual electricity measurement Accuracy 0.5%FS
Sampling rate 2 times /s display mode 2.4inch TFT Color display
Overrange display "High" installation Embedded installation
Dimension 90.0mmx61.0mmx30.0mm HOLE SIZE 88.0+0.5mmx57.0+0.5mm
Operating temperature 0~50 Work environment humidity humidity ≤ 85% RH
Annual electricity consumption by eight hours per day calculation

Connection diagram(the back):
Wiring:
1, 2 connect to AC85V~265V,
2, 4 connect to Load supply voltage,
3, 6 connect to load,
Voltage range between 1 and 2 is AC85~265V,
Voltage range between 3 and 4 is AC2~275V.

Wiring must be connected as shown above method, or it may cause damage to the power meter.

Note: There are high voltage, do be careful of electric shock.