This thermostat has been in the cabinet at our family farm for several decades.  When we upgraded to a digital version, my grandmother put it there & that's where it stayed.  I cannot test to see if it works or not.  Perhaps you can tell if wiring looks ok in the photos.  I did include a video that shows motion on the display, for reference.   If you are not able to get it to work, we will gladly refund.  Selling on eBay for 27 years, so bid with confidence.  We ship VERY quickly & we do take returns.