B.Key function description
Key function
UP
1. In normal display state, short press UP key will reversed circularly display time, power, energy, current, voltage.
2. In power alarm threshold setting state, press the UP key will +1.
3. Short press the UP key will exit the reset state when energy and time are in the reset state.
DOWN
1. In normal display state, short press DOWN key will sequential circularly display voltage, current, energy, power, time.
2. In power alarm threshold setting state, press the DOWN key will -1.
3. Short press the DOWN key will exit the reset state when energy and time are in the reset state.
SET
1. In power display state, long press 3 seconds will enter into the power alarm threshold setting state
2. In energy or time display state, long press 3 seconds will enter into the energy or time reset state.
OK
1. In normal display state, short press OK key will turn on or off the backlight.
2. In power alarm threshold setting state, press OK key to switch the setting digits
3. In energy or time reset state, press OK key will clear the energy or time and quit the reset state
C. Precautions
1. This module is suitable for indoor, please do not use outdoor.
2. Applied load should not exceed the rated power.
3. Wiring order can’t be wrong.
4. It can't be used for inverter.
D. Specification
1. Working voltage: 80 ~ 270VAC
2. Test voltage: 80 ~ 270VAC
3. Rated power: 20A/4400W
4. Operating frequency: 45-65Hz
5. Measurement accuracy: 1.0 grade
E. Wiring diagramF. Dimension diagramPackage included:
1 x PZEM-002 Current Voltage Watt KWH Time Panel Energy Meter Detail Pictures: 
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