Honeywell
Q651
Provide manual system switching for T6051 and T6052 Thermostats.
Honeywell
T921
Proportional Thermostats provide low voltage, 3-wire control for valve motors, damper motors, and balancing relays in heating or cooling system applications.
Honeywell
T498
Electric Heat Thermostats provide line voltage control of electric heating systems.
Honeywell
T4031A; T6031A
Provide limit or temperature control in refrigerated areas where remote mounting of sensing element is required.
Honeywell
T451;T651
Light Duty Line Voltage Thermostats control line voltage valves, motors, contractors, electric heat, elements, duct furnaces, and fan coil units in heating/cooling systems
Honeywell
T6051; T6052
Heavy Duty Line Voltage Thermostats used to control fan coils, fans, motor starters, valves, contactors, and circulator motors in heating and/or cooling systems.
