Thanks for taking a look Chris (and Happy Christmas).
I believe you’re right it is meant for use within a wider system Drayton Wiser system, however I was hoping it would work as a solo zigbee thermostat/temp setting device. As I already have smart switch functionality in my heating system to manage the control side of things.
I went with this thermostat after suggestion from Joris elsewhere on the forum however I foolishly didnt think to confirm if they were using binding. I’ve since confirmed with them that they’re using zigbee2mqtt not the binding, so might be a case that Zigbee2mqtt is implementing some additional work around to spoof the missing elements of the system you mentioned.
(Wireless Zigbee (or alternative) thermostat Battery - #5 by joriskofman).
Thanks again for taking a look.