[OpenTRV-interest] Curious about wireless

[Alasdair Macdonald]

The protocol is FHT:

http://sourceforge.net/p/opentrv/wiki/FHT%20Protocol/

http://sourceforge.net/p/opentrv/wiki/ELV%20FHT%20System/

I have an RFXcom RFXtrx433 but since this is a 433 MHz device and FHT
is 868.35 MHz, this device can't interoperate with OpenTRV / FHT. If
your RFXcom device is 868, you should be able to use it by identifying
OpenTRV devices as FHT devices.


On 14 September 2015 at 17:18, Kyle Gordon <kyle at lodge.glasgownet.com> wrote:
> Hey folks,
>
> Apologies if this has been answered elsewhere... I promise I have searched!
>
> How does the OpenTRV unit communicate with the 'brains' of the system? I see
> mentions of 'wirelessly', but I've been unable to find any reference to the
> technology involved.
>
> I have a fairly reasonable home automation system, centered around an RFXCom
> transceiver and Domoticz for the control side of things. Whilst I can
> control my heating through distributed sensors and dumb toggling of the
> boiler state, controlling the TRVs around the house is the next logical
> step.
>
> Any information you can send my way would be greatly appreciated!