Emerson’s Sensi Wi-Fi thermostats are known for their straightforward smart home integration. The F61-2663 wall plate solves a specific, practical problem for the ST55 and 1F87U-42WF models: a clean upgrade path. It’s the official part for covering the marks and screw holes left by your old, bulkier thermostat.

This white plate aligns perfectly with the Sensi’s own finish, creating a seamless look on your wall. Installation is simple. You secure the plate over the existing footprint, then mount your Sensi thermostat directly onto it. The result is a professional, flush installation that erases the evidence of your previous hardware. It feels intentional, not like a workaround.

Note that this plate is not compatible with the newer Sensi Touch models (ST75/ST75W). For the specific models it supports, it’s a reliable, no-fuss solution that completes the install. Over 1,800 five-star reviews consistently highlight its exact fit and the polished final look it provides.