New models of the Alarm.com Smart Thermostat (ADC-T2000) support Z-Wave SmartStart for faster and easier installations and Z-Wave S2 security for more reliable communication between devices, longer battery life, and greater overall security.

To determine if a Smart Thermostat is compatible with Z-Wave S2 security and SmartStart, see the steps below.

Find the firmware version

The Smart Thermostat is only compatible with Z-Wave S2 security and SmartStart if it has firmware version 2.01+.

Yes, the Alarm.com Smart Thermostat is compatible with up to three stages of heating and two stages of cooling.

Yes. The Smart Thermostat supports systems with more than one zone. Each zone can be controlled by its own Smart Thermostat. The Smart Thermostat is compatible with other Z-Wave thermostats; however, the system will work best and most efficiently if all thermostats in the house are replaced with Smart Thermostats.

The Smart Thermostat can control many variable-speed HVAC systems which use standard 24 volt wiring (e.g., with R, G, Y, W, C wiring).

Yes. The Smart Thermostat HD and ADC-T3000 can control a humidifier or dehumidifier using the Z1 and Z2 terminals, while the ADC-T2000 with firmware version 1.5 + can control either a humidifier or dehumidifier using the Z terminal.

The Smart Thermostat works with HVAC systems that have an external air baffle controlled by the central HVAC system programming.

Some systems rely on the thermostat itself (not the central HVAC system) to control the baffle. The Smart Thermostat will be able to support these systems using the Z terminal. This feature will be made available in the future by a firmware update.

The Z terminal of the Smart Thermostat can currently control: 

• A third heating stage.
• Humidifier.
• Dehumidifier.
• O/B zoning on heat pump systems with both an O and B wire for the ADC-T2000. This option is not available on the Smart Thermostat HD or ADC-T3000 due to their separate O and B terminals.
• On the ADC-T2000, the O wire would go into the O/B terminal and the B wire would go into the Z terminal. 

An account is required to configure the Smart Thermostat for the first time. Initial configuration can be done using the Alarm.com customer website, Partner Portal, or MobileTech app. If a customer later cancels service, the Smart Thermostat will continue to function, and the customer will retain basic control of heat and cool modes as well as the target temperature. However, all advanced features and capabilities (such as Smart Thermostat scheduling and Away from Home overrides) will be lost.

Heat pumps have either an O terminal or a B terminal. When configuring the Smart Thermostat, the system prompts to select which terminal type the heat pump has. If the system heats when it should to be cooling, this means that the incorrect terminal type was selected at configuration. This can be easily changed using the Installer section of Thermostat Configuration via the Alarm.com Partner Portal or MobileTech app.

Yes. The Smart Thermostat determines whether it will act as a repeater at the time it’s learned into your Z-Wave network. As long as the C-wire is connected and powering the Smart Thermostat (verify the HVAC system isn’t switched off at the breaker) when it’s learned in, the Smart Thermostat will repeat Z-Wave signals and improve the reliability of your Z-Wave network.

The Smart Thermostat has a strong Z-Wave range, so whenever possible learn it in with C-wire power to improve communication between all Z-Wave devices in the home.

The Alarm.com Smart Thermostat will display HOT when the temperature reading exceeds 100 degrees. 

Emergency Heat is designed to heat the house quickly but energy inefficiently/expensively. Emergency Heat, labeled EMER, will bypass the Heat Pump and go directly to the Aux Heat. It is only available for the Alarm.com Smart Thermostat. From the Smart Thermostat, put the thermostat into EMER mode locally by holding the ''' button.

Yes. Setpoint minimum and maximum temperatures can be adjusted on the Smart Thermostat configuration page using the Alarm.com Partner Portal, MobileTech app, customer website, or customer app. 

Yes. Local control of the thermostat can be disabled on the Smart Thermostat configuration page with Thermostat Lock using the Alarm.com Partner Portal, MobileTech app, customer website, or customer app. 

Thermostat Lock has the following three function options:

• Disabled allows local control of setting the target temperature at the Smart Thermostat. 
• Enabled prevents all local control of the thermostat so that it can only be adjusted using the customer website or customer app. 
• Partial allows local control of setpoint changes but prevents mode changes at the Smart Thermostat.