WE JUST moved into a new place, and it has a programmable thermostat - but we don't have the manual to the thermostat. It appears to have a brand name: "WONDER," and it has "set and save" inscribed on the front panel. A small panel comes off on the front and the choices are:

Hour, minute, day, and it has an up button for raising the temp, and a down button
Prog, hold,

I did an internet search, but found nothing under the brand name "Wonder" - any advice? Thank you

Did you check the sticky at the top of this forum on thermostat manuals?

Oop! The sticky that might help you is under E&L,
https://www.askmehelpdesk.com/electrical-lighting/thermostat-manuals-37098.html