Connex Smart Thermostat, Wall Mount, Connect Non-WIFI Heaters To Connex Heaters, Touch Controls, Precise Temperature Control, Economy Mode Lowers Temperature To Pre-Set Level When Room Is Empty, Backlit Display In Both Fahrenheit & Celsius, Displays Relative Humidity, Lowers Energy Costs Approximately 10%, Works With New & Old Heaters, Convection Or Fan Forced, Easy Installation, 240V, 4000W, Measures 4-5/8" x 1-1/2" x 5-1/8", 3 Year Warranty.