Pro1 IAQ Universal Programmable Thermostat Compatible with Wired Sensors T755S

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  • Universal
  • Up to 2 Heat 2 Cool Conventional
  • Up to 3 heat 2 Cool Heat Pump
  • Battery or Hardwired
  • 7 Day, 5/1/1 or Non-Programmable
  • Compatible with Wired Remote Sensors


  • Universal 2H/2C Conventional or 3H/2C Heat Pump
  • Compatible with Indoor Remote Sensor (R251S) or Outdoor Remote Sensor (R250S)
  • Add Indoor Sensor(s) to move the System Sensing Point or Sense a System Average
  • 7 Day, 5/1/1 Programmable or Non-Programmable
  • Set Hardware Dual Duel Balance Point with Outdoor Remote Sensor (250S)
  • Tightly Control Hydronic Radient System with Slab Sensor (250S)


  • The display range of temperature 41°F to 95°F (5°C to 35°C)
  • The control range of temperature 44°F to 90°F (7°C to 32°C)
  • Load rating 1 amp per terminal, 1.5 amp maximum all terminals combined
  • Display accuracy ± 1 °F
  • Swing (cycle rate or differential) Heating is adjustable from 0.2°F to 2.0°F Cooling is adjustable from 0.2°F to 2.0°F
  • Power source 18 to 30 VAC, NEC Class II, 50/60 Hz for hardwire (common wire) Battery power from 2 AA Alkaline Energizer batteries
  • Operating ambient 32° to +105° (O° to + 41°C)
  • Operating humidity 90% non-condensing maximum
  • Dimensions of thermostat 4.7"W x 4.4"H x 1.1"D