AC Single Phase Watt Energy Meter RS485 Modbus 220V 100A Voltage Current Frequency Power factor Kwh Meter With Split CT&USB, This module is mainly used for measuring AC voltage, current, active power, frequency, power factor and active energy, the module is without display function, the data is read through the RS485 interface. Display Format:When the data is less than 10kWh, the display unit is Wh (1kWh = 1000Wh), for example: 9999Wh ,When the data is greater than equal 10kWh, the display unit is kWh, for example: 9999.99kWh Power:The AC voltage passes through the switching power supply to provide two isolated outputs. One way is to provide 3.3V to the measurement system, and the other way is to provide 5V for the 485 communication circuit and external circuits. Display Format:When the data is less than 1000W, one decimal place is displayed, for example: 999.9W ,When the data is greater than equal 1000W, only integers are displayed, for example: 1000W Voltage: Measurement range: 80 ~ 260V, Resolution: 0.1V , Measurement accuracy: 0.5% , Current, Measuring range: 0 ~ 100A , Initial measurement current: 0.02A, Resolution: 0.001A, Measurement accuracy: 0.5%, Active power, Measuring range: 0 ~ 23kW, Initial measurement power: 0.4W, resolution: 0.1W 1.3.5 Measurement accuracy: 0.5% 1.4 Power factor 1.4.1 Measurement range: 0.00 ~ 1.00 1.4.2 Resolution: 0.01 1.4.3 Measurement accuracy: 1% 1.5 frequency 1.5.1 Measurement range: 45Hz ~ 65Hz 1.5.2 Resolution: 0.1Hz 1.5.3 Measurement accuracy: 0.5% 1.6 Active energy 1.6.1 Measuring range: 0 ~ 9999.99kWh 1.6.2 Resolution: 1Wh 1.6.3 Measurement accuracy: 0.5% 1.6.5 Reset energy: Use software to reset. Power failure alarm:Can set the active power threshold, when the measured active power exceeds the threshold, you can alarm communication interface:RS485 interface.2 other instructions communication interface power suppl