The Emerson Climate-White Rodgers 1609-101 is a reliable and versatile temperature control device designed for HVAC systems. It operates within a temperature range of -30°F to 90°F and features a 5-foot capillary tube for flexible installation. With a close on high rise function at 3.5°F to 40°F differential, it ensures precise temperature regulation. https://www.partshnc.com/1609-101-emerson-climate-white-rodgers-3090f-5capclosehi3540fdif