> ideal one-size fits all thermostat The round Honeywell electromechanical thermostat with a bimetallic strip, invented in 1953: https://www.honeywellstore.com

> ideal one-size fits all thermostat The round Honeywell electromechanical thermostat with a bimetallic strip, invented in 1953: https://www.honeywellstore.com/store/products/honeywell-round-manual-thermostat-ct87n1001.htm https://www.honeywellstore.com/store/products/honeywell-roun... 24VAC, dead simple, and reliable. My family’s lake house has 50+ year old Honeywell round thermostats still in service.