Features:2-pipe system air conditioner thermostat.Used for central air conditioner/fan coil units.4 fan speed adjustable (low, mid, high and auto).3.2 large LCD touch screen, displays data clearly.Weekly programmable for more versatile demand.Sleek and simple appearance fits your modern house perfectly.Using flame resistance material, the thermostat is safe and reliable to use.With this high-efficiency and energy-saving thermostat, not only can it drives down home energy costs, but also provides you comfortable living environment.