HLW8032 consumption monitoring chipset build in, NO calibration needed,
 
The measurement error of active power about 0.2%
The measurement error of effective current is 0.5%
The measurement error of effective voltage is 0.5%
 
Pre Flashed TASMOTA EU Wall Socket Cosumption monitoring
 
The latest  full version
Fully compatible with official Tasmota OTA server
Pre configed IOs plug and play
Pre flashed before assembling
Build in ESP8266 chip with 2M flash<