Room thermostat wiring tables: guide to generic or standard wiring connections for standard or generic room thermostats
Two 2 wire Honeywell digital thermostat to replace mercury switch. Convert from mercury switch - YouTube
Honeywell CT410A Manual Thermostat Single Pole 2 Wire Electric Heat White Sealed | eBay
heating - Wifi thermostat to replace old mechanical 2-wire 110V Honeywell? - Home Improvement Stack Exchange
2-Wire Installation for Honeywell Thermostat - YouTube
Trying to replace this old 2 wire thermostat for a newer digital one. Problem is older unit does not have leads labeled or which cable is which. Any help on how to
Old thermostat has wire 1, 2 & 3. Which smart thermostat is compatible? : r/electrical
Older home - heat only - 2 wire : r/smarthome
Honeywell CT410A Manual Thermostat Single Pole 2 Wire Electric Heat White Sealed | eBay
Old Honeywell 2 wire AC thermostat (with 1 extra wire behind) - can I modernize this with Ecobee? : r/ecobee
Re-wire furnace only thermostat from 2-wire to 5-wire