LX-Series thermostats are suitable for residential or commercial gas/electric, heat pump, multistage, and hydronic systems. They offer an extraordinarily rich set of features. A variety of matching accessories offer extended functionality to the dealer and the home or building owner. • Large (4.7 sq in) digital display with soft white adjustable intensity backlight displays current indoor and outdoor (with optional remote sensor) temperature, setpoints, day of week, and time. • Adjustable scrolling10-character 16-element marquee text guides through setup and programming steps in plain language and allows customizable service alerts and error messages. • Bicolor LED mode indicator and backlit, color-coded soft-touch keys. • Programmable models meet Energy Star and California Title 24 specifications. • Up to 4 stages heating and 2 stages cooling. • Up to 7-day installer selectable programming. • Auto changeover • Built-in compressor protection • Adjustable timers and deadbands • Auxiliary heat indicator • Auxiliary heat lockout • Fahrenheit/Celsius display • Service filter reminder • UV lamp replacement reminder • Remote temperature sensor ready • Programmer compatible • Wireless accessories • Humidification and dehumidification • Dual fuel capable