CP18D4DNL2 is a Commercial Programmable Thermostat from Honeywell. It is a wall mountable, low-voltage thermostat designed for controlling heating and cooling systems up to 3 stages of heat and 2 stages of cool in a variety of applications. It is ideal for commercial applications such as offices, hotels, schools, and apartments. It features a 3-inch non-programmable display and manual temperature override control. It has a humidity sensor, lockout capabilities, time of day display, energy management capabilities, and is compatible with both Honeywell’s ComfortLink and Total Connect comfort systems.