Dry contact relay options (uk)

Does anyone know of any reasonable priced relays, z-wave or zigbee, I wish to control my boiler heating. Not sure what voltage it is, it would be normally controlled by a mechanical thermostat

Dry contact devices are not normally used for control, they are used to report a change in state.

A relay can control a device. That said, that’s not normally how you control a boiler as it would lack any safety features.

So I’m not quite sure what you’re actually looking for. What’s the brand and model of the boiler?

For anyone who is in the UK and is looking for a dry contact device, see the community FAQ. It covers both US and UK devices. (That said, it doesn’t match the use case described in the first post of this thread.)

Thanks for that…
I’m after a relay with no potential. Most people brand switches as relays. I’d have asked for a sensor if I wanted.
A relay is a bit more specialised the only offering I’ve seen is fibro one FGS-212

I use a Fibaro FGS-212 in the UK to trigger a garage door motor which needs 12v. Not sure about this as a heating control however, as expert @JDRoberts mentions.

I’ve have one of those on my garage. Just a bit pricey

Going to try one of these
£30.74 15%OFF | MCOHOME Z-Wave Plus enabled Micro ON/OFF Switch MH-S220 support high load
https://s.click.aliexpress.com/e/CRPAKrMk

FWIW - I use a relay for our gas boiler (steam heat). My Ecobee thermostat replaces a former on/off simple mechanical thermostat which just completes a circuit to heat on/off. The boiler itself has multiple safety features. Ecobee provides clear set up instructions / diagrams as to how to wire in a relay for this situation. (The Ecobee itself is powered by a transformer, as the there is no C wire).

1 Like

How did the chinesum one go? I tried one similar and it failed after a month. For info qubino do a dry contact version of their relays. I have the wet contact versions that work well. These have an excellent suite of DHs from @erocm1231.

Still working well with stock dh

Old thread, but anyway… :slight_smile:

Just ordered one of these - have been searching for a Zigbee version for months:

The L1 / Lout terminals should be a dry contact relay (potential free) according to this post from our friends at Hubitat: https://community.hubitat.com/t/hubitat-for-aus-nz-chat/11425/1936

Tags: Zigbee dry contact relay

1 Like

This unit as a dry contact wifi reply by a company call Coolseer but can not find a place in EU / UK that sell them They tell me they normally don’t sell to end user directly. As the shipping cost by dhl is very high. For the EU distributor, as they use their own brand.

With these 2 item you can made yourself a smart heating control.

how did you add the tuya to smartthings? new app no support just adds as thing

how did you add it to smartthings new app it is not supported?