Function of measuring electrical parameters (voltage, current, active power, energy, frequency, power factor) Overload alarm function (exceeding the power alarm threshold, backlighting and flashing power to the alarm). Pre-set power alarm threshold function (power alarm threshold can be set). Energy can be reset with a key. Store data when power off. Large screen LCD Backlight function. Brand: PEACE! Model: PZEM-022 Operating Voltage: 80260VAC Test Voltage: 80260VAC Current: 100A Rated Power: 100A/22000 W Operating frequency: 45-65Hz Measurement accuracy: Class 1.0 Size: 9 * 5 * 2,5 cm / 3,5 * 2 * 1 inch Wire length: 19 cm/7,5 inch Weight: approx. 110g/3.9 oz Appearance and key function: I. Display interface The display interface is a large LCD screen, it can display six parameters simultaneously. II. Format display 1. Power: test range: 022000W, initial measurement power: 0,5W Format display 10 W: 1,00 9,99 W Format display 100 W: 10,0 99,9 W Format display 1000 W: 100 999 W Format display 10000 W: 1,00 9,90 kW Format display 10000 W: 10,0 22,0 kW 2. Energy: test range: 0999kWh Format display 1kWh: 0999Wh Format display 10kWh: 1,009,99kWh Format display 10kWh: 10999kWh 3. Voltage: test range: 80260V Format display: 80260V 4. Current: test range: 0100A, initial measuring current: 0,002A Format display 10A: 0.000 9.000A Format display 10A: 10,0099,99A 5. Frequency: test range: 4565Hz Format display: 4565Hz 6. Power factor: test range: 01PF Format display: 0,001,00 PF Function key: 1. Backlight control Briefly press the key to turn the backlight on or off, the backlight has a memory function, it can store the on or off state when the power off. 2. Reset the energy Step 1: Long press the key for 5 seconds until the energy value starts flashing, then release the key. Step 2: Press the key briefly again, then the energy value will be cleared and exit the flashing state reset. Step 3: If no operation on the key is performed within 5 seconds, it means that the energy value will not be cleared and will exit the reset state. 3. Set a power alarm threshold Step 1: long press the key until "SET CLr" appears on the LCD screen, then release the key to go to the setting state Step 2: the power window displays the current value of the power alarm, and the last digit begins to flash, then you can briefly press to plus 1, when there is no action for more than 3 seconds, it will automatically switch the digit position, the setting method is the same as above. Step 3: When the settings are finished, long press the key for 5 seconds will automatically save and output, the active power threshold range is 0,02,5kW. List of packages: 1 x Multifunction AC Digital Meter 1 x Closed Type CT Note: 1. This module is suitable for indoor use, do not use outdoors. 2. The applied load should not exceed the rated power. 3. The wiring order cannot be wrong.