Board W3230 - TG9541/stm8ef GitHub Wiki
W3230 Thermostat
This looks quite like W1219 in a nice bezel. Unfortunately mine has the unmarked cpu. And pcb different to below.
Ebay pcb photo:
This looks quite like W1219 in a nice bezel. Unfortunately mine has the unmarked cpu. And pcb different to below.
Ebay pcb photo: