Honeywell Mercury- Round Thermostat a blend of classic design and modern functionality. This electronic thermostat features the familiar round shape with a slightly taller profile, making it easy to install and use while maintaining the traditional look and feel. It provides precise temperature control and includes a decorative cover ring to hide any wall marks, ensuring a clean and polished appearance. Compatible with most single-stage heating systems such as hot water, gas, or steam, this off-white thermostat is designed to fit seamlessly into your home environment. Whether you need a heat-only setting or both heat and cool options, this thermostat delivers reliable performance with style. Model Number: CT87K1004/E1 or CT87N1001/E1