Description: AC single phase with RS485 serial port multi-function monitoring box. Can measure voltage, current, power, power, frequency, power factor, maximum 10A! 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. Specification: PZEM-014: Measuring Range 10A (external transformer) Voltage: Measuring range:80260V Resolution: 0.1V Measurement accuracy: 0.5% Current Measuring range: 010A Starting measure current: 0.01A Resolution: 0.001A Measurement accuracy: 0.5% Active power Measuring range: 02.3kW 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-014 AC Communication Module 1 Piece Manual