The Alarm.com ADC-T2000-RC is Alarm.com's Programmable Smart Z-Wave Thermostat and is the same as the ADC-T2000 however Alarm.com started to manufacture this product in the United States and needed to update the model number and packaging. Stay comfortable and save money with the ENERGY STAR? certified Smart Thermostat (T2000). Energy-saving schedules and an easy-to-use mobile app make it simple to remotely control your connected thermostat from anywhere. Enjoy precision comfort when paired with an Alarm.com Temperature Sensor.Smart configurationComplete your installation quickly by configuring the thermostat locally or from the MobileTech configuration wizard. Both options provide a fast and accurate installation experience.Broad HVAC compatibilityWorks with almost any heating and cooling system, including up to three stages of heat and two stages of cooling, multiple zones, heat pumps, and dual fuel systems.Flexible power optionsUnlike most thermostats, the Alarm.com Smart Thermostat can operate on AA batteries for up to 18 months or can be connected directly to a common wire.