With the comfort, convenience, and efficiency features that homeowners and contractors want, the RS4000 family provides custom program options in value-packed thermostats for an affordable price.

• Quick connect wiring feature to save up to 15 minutes on every installation.
• Pop-up Wizard to customize thermostat settings with an instant start-up menu.
• Fully adjustable differentials to maintain optimal heating and cooling comfort year-round.
  All RS4000 thermostats are fully compatible with all standard 24V AC heating and cooling systems.
  Additional compatibility with multi-stage gas/electric furnaces and heat pump systems is available in the RS4220 model.