Frost protection thermostat for duct mounting (FT)
The frost protection thermostats reliably monitor the temperature in hot water-heated air 
heaters. If the temperature falls below the set value, the   thermostat switches off.
Line voltage frost protection thermostat for heater batteries in air handling units.
Frost protection thermostat with capillary (T69)
Line voltage frost protection thermostat for reheaters in air conditioning systems, and 
heat exchangers in cooling systems.
Room thermostat, industrial, 1/2 stages (T6120)
Line voltage thermostat for control of heating-, cooling-, and ventilation systems in industrial 
areas.