Remote bulb refrigeration temperature controller, -30F to +90F, capillary length 8 feet, differential adjustable. 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 compressor system. Control temperature in duct, tank, freezer or cooler. Controller element can be directly immersed in 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.