ESP32-C3 based WiFi to EBUS adapter powered from EBUS.

For the newest version, please order from my worldwide distributor

This product listing is only for reference and selling old stock. Please don't join the waitlist.

No need for external power supply or optical isolation.
Just connect to your EBUS with 2 wires and you are done.
Unsecured AP will appear on first start to setup connection to WiFi network.
v5.2 contains a trimmer to precisely adjust for your EBUS voltage levels,v6.0 can be adjusted via web configuration.

SW and Documentation: https://github.com/danielkucera/esp8266-arduino-ebus
3D-printable case by Volkmar: https://www.printables.com/en/model/432045-case-for-ebus-to-wifi-adapter-module

Developed with Vaillant ecoTEC pro. Confirmed to be working with multiple types of Vaillant, Wolf, Ariston, Saunier Duval, Protherm and others.

30-day free return with full refund.