How do I install the Honeywell Home Pro Series Thermostat with the UWP mounting system?

First, turn off power at the breaker box, then position and level the UWP on the wall, marking and drilling holes as needed. Insert wall anchors, open the UWP door, pass wires through the wiring hole, and mount the UWP securely by tightening the mounting screws. Close the door, attach the thermostat by aligning it with the UWP and pushing gently until it snaps in place, then restore power at the breaker box.