This product was designed by Mind House.
By buying this product your support original hardware creators.
This adapter is designed to connect an OpenTherm compatible boiler to any TTL port (TTL-USB, ESP8266, ESP32, Arduino, etc).
OpenTherm - TTL adapter
Sold by Mind House
$18.93
No tax for United States [change]
Stock available: 20
Volume discount | |
2+ items | $0.95 |
4+ items | $1.89 |
Same size as popular RS485-TTL module for more compatibility.
As software part you can use:
OpenTherm gateway for HomeAssistant - very intelligent OT control firmware 🧠
Tasmota OpenTherm - perhaps the easiest way to connect the boiler to your smart home system 🏚
Opentherm IO library for Arduino or OpenTherm Arduino/ESP8266 Library (slave mode only) if you want to build your own firmware 🛠
Links to code and documentation
Shipping policy
Some items ship from Germany and others from China. Please check.
The seller
Smart home DIY solutions