The Emerson 1F56N-444 mechanical thermostat runs heating and cooling systems from one dial. It works without batteries or electrical power.
We name the system, the voltage, and the wire. Follow the wiring diagram for the heat and cool circuits. No C-wire is required. Set it once to the comfort point. Most rooms finish in about 20 minutes, room by room for heat only or full heating and cooling changeover.
1F56N-444 Highlights
Battery-free mechanical operation
Keeps controlling temperature during power outages.
