Can anybody suggest me any zigbee device that has dry contact output?
(and will works with the offline thermostate 
)
Created a new topic for you 
1 Like
I have modified a BasicR2 relay for that purpose. I have cut the 230V lines on the PCB on output contact of actual relay. Solder new connections from outputs of actual relay on PCB to output connection on BasicR2 relay
I have got this way a no voltage, normal open contact.
BasicR2 is a wifii relay, unfortunately, but probably the same can be done with a zigbee relay
Unfortunately I’ve never been on the ITEAD website and seen a Zigbee basic in stock. Worth checking but I think you might need to look for a different brand that works with eWeLink, luckily switches are quite simple and I’ve not yet found one that does not work on an iHost. Maybe the Zigbee mini but it doesn’t look very openable. One of the benefits of the basics is their ease of opening.