Hi - if you’re thinking about this product:
Then no, it’s just a wireless thermostat, it has no boiler control/relay functionality.
The Secure boiler thermostat is probably what you’re looking for:
https://www.uk-automation.co.uk/secure-z-wave-room-thermostat-with-built-in-relay-srt323/
There is a device handler that someone has written in the community for the SRT321 (very similar product) which I would think could be adapted:
Craig