Honeywell T87N1000 Round Non-Programmable, 1H/1C, Mechanical Thermostat

 The Round T87K and T87N thermostats provide electronic control of 24Vac heating and cooling systems with the classic twist to set dial.FeaturesMercury FreeClassic StylingPremier WhiteSeparate temperature setting and thermometerThe T87K heat only works with 2 or 3 wire heat only systemsThe Easy-To-See has enlarged scale and raised numbers plus it clicks at every 2ªF change