White Rodgers 1C26-101 Thermostats ECONOMY 24V MECHANICAL THERMOSTAT, NO PGM, STAGING 1H/1C, HP 1H/1C (NO AUX), SYSTEM HEAT/OFF/COOL OR HEAT ONLY, 24V OR MV, FAN AUTO/ON OR AUTO (NO FAN CONNECTION), PROFILE VERTICAL, INCLUDES WALLPLATE TO COVER OLD WALL MARKS, RC,RH,W,Y,O,B,G,A