Wireless radiator TRV + wall thermostat?

Hardware
1

Hi,

Any recommendations for wireless radiator TRV / actuator + wireless wall thermostat combination? My radiator TRV’s are behind curtains (No, cannot remove/move curtains, wife in charge…) and therefore temperature measurement from TRV is a terrible idea.

I have already room temperature measurement in each room, but is there any radiator TRV which accepts current temp. from other device? There are multiple WiFi versions, but I think they won’t accept data from existing wall thermostat.

I used to have EQ-3 kit, but it’s no longer available and new HomeMatic version is overshoot because the pricing.

I tried to get Siterwell GS361A-H04 Zigbee 3.0, (mentioned here https://bit.ly/32rgx7s) but they are out-of-stock from this “official” Alibaba supplier https://bit.ly/2ZBNaO3

Thanks,
Simo