# Should I buy those Zigbee thermostats

**URL:** <https://discourse.nodered.org/t/should-i-buy-those-zigbee-thermostats/35365>\
**Category:** Hardware\
**Created:** [5 November 2020 10:07 UTC](https://discourse.nodered.org/t/should-i-buy-those-zigbee-thermostats/35365 "2020-11-05T10:07:14Z")\
**Posts on this page:** 1\
**Showing post:** 21

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**Author:** ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)\
**Post date:** [8 November 2020 12:26 UTC](https://discourse.nodered.org/t/should-i-buy-those-zigbee-thermostats/35365/21 "2020-11-08T12:26:29Z")

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> [@TotallyInformation](#):
>
> you are supposed to have 1 radiator without a TRV

I think that depends on the boiler. Mine does not need that.

[Edit] I might have to retract that statement. If by TRV you mean the dumb ones that just close the valve without any way of knowing whether they are open or closed, which I think you probably did.

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