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Emerson Climate Technologies Sensi Thermostat

Sensi™ Wi-Fi Programmable Thermostat 1F86U-42WF

    Installed in 24 hours!


  • Easy to install with traditional wire and configure installation.
  • Simple to connect and can connect with Android or iOS devices over Wi-Fi.
  • Over-The-Air (OTA) Product Updates lets you receive the latest features like newly added alert emails and dual fuel capability.
  • Universal application with up to 4 heat/2 cool.
  • It can work without Wi-Fi as a standard thermostat.​
Terminal Designations

  • 5.875″ W x 3.75″ H x 1.125″ D
Thermal Specifications
Setpoint Temperature

  • 45° to 99° F (7° to 37° C)

Rated Differential:

Fast Medium Slow
Heat 0.5°F 0.75°F 1.9°F
Cool 0.9°F 1.2°F 1.7°F
Heat Pump
Heat & Cool 9.0°F 1.2°F 1.7°F
  • -20° to 150°F (-29° to 65°C)
  • 0% – 90% RH non-condensing
Electrical Specifications Rating
20 to 30 VAC, 50/60 Hz

  • 0.05 to 1.5 Amps (load per terminal)
  • 2.5 Amps maximum load (all terminals combined)

Standard Systems

  • Single Stage gas, oil, electric
  • Single Stage heat pump
  • Multi-Stage gas, oil, electric
  • Multi-Stage heat pump
Wall Plate 6-3/4″ x 4-1/2″

  • F61-2663
  • Used to cover marks left by previously installed thermostats

Thermostat Guard – Clear

  • F29-0198


Consumers Energy Management Inc. is Authorized Retailer of Emerson Climate Technologies
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