THERMOSTAT SUBBASE FAN:AUTO-ON

THERMOSTAT SUBBASE, SYSTEM SWITCH: HEAT-OFF-COOL, FAN SWITCH: AUTO-ON, USE WITH ASYSTAT610 AND ASYSTAT611 THERMOSTATS. ACTUAL PART DIMENSIONS: 5/8"HIGH X 5 3/8"WIDE X 3 7/16"DEEP, ACTUAL PART WEIGHT: 5 OUNCES