Description: AC single phase with RS485 serial port multi-function box; can measure voltage, current, power, power, frequency, power factor, maximum 100A! It can display six measurement parameters on the computer when communicate through the software; it can also communicate with the buyer's own micro controller (the buyer should program by yourself)! The high accuracy, better compatibility will make it use widely. PZEM-016: Measuring Range 100A (external transformer) With Split CT + USB to 485 module. Active power Measuring range: 02.3kW;Power factor Measuring range: 0.001.00;Frequency Measuring range: 45Hz65Hz.Active energy Measuring range: 09999.99kWh. Specification: Voltage: Measuring range:80260V Resolution: 0.1V Measurement accuracy: 0.5% Current Measuring range: 0100A Starting measure current: 0.02A Resolution: 0.001A Measurement accuracy: 0.5% Active power Measuring range: 023kW Starting measure power: 0.4W Resolution: 0.1W Display format: When the data is 1000W, it display one decimal, such as: 999.9W When the data is 1000W, it display only integer, such as: 1000W Measurement accuracy: 0.5% Power factor Measuring range: 0.001.00 Resolution: 0.01 Measurement accuracy: 1% Frequency Measuring range: 45Hz65Hz Resolution: 0.1Hz Measurement accuracy: 0.5% Active energy Measuring range: 09999.99kWh Resolution: 1Wh Measurement accuracy: 0.5% Display format: When the data is 10kWh, the display unit is Wh(1kWh=1000Wh), such as: 9999Wh When the data is 10kWh, the display unit is kWh, such as: 9999.99kWh Reset energy: use software to reset. Over power alarm: Active power threshold can be set, when the measured active power exceeds the threshold, it can alarm Communication interface: RS485 interface Package Includes: 1 Piece PZEM-016 AC Communication Module; 1 Piece Split CT; 1 Piece USB to 485 module