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EmonTx + WiFi Adapter

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£81.60 (inc VAT) £68.00 (exc VAT)
274.00 Grams
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EmonTx V3 with pre-fitted WiFi adapter. Can be used to post data to emoncms.org or another emoncms server directly from an emonTx without a separate base-station.

  • Includes pre-programmed Adafruit ESP8266 Huzzah WIFI module running open-source OpenEnergyMonitor emonESP firmware.
  • No soldering required - all connectors fitted.
  • WiFi adapter easily slots in and out for use with a USB to serial UART programmer.
  • EmonTx firmware pre-loaded and configured. 


  • Important: due to the increased power consumption from the WiFi module the emonTx must be powered by a DC 5V mini USB power supply (not included) in conjunction with an AC-AC voltage sensor adaptor. 
  • Programmer (not included) is highly recommended.


User Guide: Using the emonTx v3 with the ESP8266 Huzzah WIFI module

Useful links

Forum post: Using the emonTx v3 with the ESP8266 Huzzah WIFI module

Github: emonESP open-source firmware

Adafruit: Full technical spec, datasheet and PCB CAD files for Adafruit ESP8266 Huzzah WIFI

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