Honeywell Remote Bulb Refrigeration Mechanical Temp Controller T6031A1029, -30 F To 90°F, 8 Ft Capillary Features Provide limit or temperature control in refrigerated areas where remote mounting of sensing element is required Liquid-filled copper elements provide rapid sensing to control Honeywell Remote Bulb Refrigeration Mechanical Temp. Controller T6031A1029, -30 F To 90°F, 8 Ft. Capillary Features Provide limit or temperature control in refrigerated areas where remote mounting of sensing element is required Liquid-filled copper elements provide rapid sensing to control the compressor system Control temperature in a duct, tank, freezer or cooler Controller element can be directly immersed in the controlled medium Adjustable control set point Ambient temperature compensation provides good temperature control Refer to T775 Electronic Remote Temperature Controller where more exact control is required and/or remote controller location is preferred