This is a BRAND NEW Honeywell Programmable Floor Heating Thermostat. It is rated at 120v/240v with 7 day programming, has 4 wires (DPST) with full double poll disconnect and 3 choices of temperature control.
A thermostat senses the air temperature in a room and has the ability to turn on the furnace or air conditioner based upon that temperature. Modern thermostats are usually digital, often programmable, and occasionally WI-Fi capable.
Replaces Old Part #s:
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TST55 017-U1View AllClose