AC Digital Watt Meter PZEM-028 AC40-400V 100A Peace Fair PZEM 028 KWH Meter Volt Meter Amp Meter PF Meter

Original dan Brand New PeaceFair PZEM-028 AC Digital Wattmeter,Specification:1. VoltageMeasurement range: 40～400VDisplay format:＜100V display such as：80.0V≥100V display such as：220VAccuracy: ±1%2. CurrentMeasurement range: 0～100ADisplay format: ＜10A display such as：1.00A＜100A display such as：10.0A≥100A display such as：100AStarting measurement:0.02AAccuracy: ±1%3. PowerMeasurement range: 0～22kWDisplay format:＜10W display such as：5.0W＜100W display such as：50.0W＜1000W display such as：500W＜10000W display such as：5.00kW≥100V display such as：22.0kWStarting measurement:2.2WAccuracy: ±1%4. Power factorMeasurement range: 0～1Display format: such as：1.00PFOther Function1. Backlight controlThe backlight can be turned on or off by short press the key2. Error adjustmentThe product is calibrated 100% before delivery, the user can adjust error manually. the method is as followsStep 1: long press the key (about 3 seconds) until the screen digit flashes, then release the key;Step 2: Digital flicker means entering error adjustment state, and the digit cycle flickers in sequence: voltage high digit→voltage middle digit→voltage low digit→voltage decimal point→ampere high digit→ampere middle digit→ampere low digit→ampere decimal point. The flicker represents the present adjustable digit, short press the key to adjust the value (Digital 0-9 cycle, decimal point shift);Step 3: long press the key (about 3 seconds) after the adjustment, the screen display PASS and return to the normal display interface, means the adjustment is successful.Note: Error adjustment must be carried out under pure resistance (PF=1.00) load environment, otherwise the active power error after adjustment will be too large!