Sensi Wi-Fi Smart Thermostat - 1F87U-42WF

Sensi Wi-Fi Smart Thermostat - 1F87U-42WF

Replace a compatible Sensi Wi-Fi thermostat and restore app-connected heating and cooling control. Confirm the complete equipment model, system type, heating and cooling stages, power or voltage, terminal labels, auxiliary/emergency heat requirements, and wiring before ordering. A similar-looking thermostat is not proof of compatibility; some systems require a common wire, adapter, or approved control.

Installation and safety: Turn off power at the HVAC disconnect or breaker before removing the existing thermostat. Label each wire, follow the equipment and thermostat instructions, and use a qualified HVAC technician when system voltage or wiring is uncertain.

How to find your model number: Read the thermostat model number on the front, behind the faceplate, or inside the sub-base. Also photograph the terminal wiring and locate the furnace, air-handler, or heat-pump model label. Verify the complete equipment and thermostat details before ordering.

Technical Specifications