Operate the Alarm.com Smart Thermostat
Oct 09, 2025
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How to Operate the Alarm.com Smart Thermostat (ADC-T3000 & ADC-T2000) Locally
The Alarm.com Smart Thermostat models ADC-T3000 and ADC-T2000 can be operated locally, in addition to their remote control features via the Alarm.com Customer Website and app.
Locally Operating the ADC-T3000
Waking the Device
- Press any button to wake the thermostat.
- After waking, the display shows the current mode, room temperature, and setpoint.
Note: The ADC-T3000 display cannot stay on permanently, but it can wake when motion is detected nearby. For details, see Enable or disable motion-detected wake.
Changing the Mode and Setpoint
- Press the Menu button.
- Select MODE.
- Available modes include HEAT, COOL, AUTO, EMER, and OFF.
- In EMER mode, the display flashes EMER when waking up and shows HEAT at the top.
- Select the desired mode.
- Use the ▲ and ▼ buttons to adjust the temperature setpoint.
In AUTO mode, the screen shows AUTO when idle, HEATING during heat calls, and COOLING during cool calls.
Changing the Fan Mode
- Press the Menu button.
- Select FAN MODE.
- Fan modes include AUTO, ON, and CIRCULATE.
- AUTO: Fan runs only during heating or cooling.
- ON: Fan runs continuously (must be enabled remotely).
- CIRCULATE: Fan runs 15 minutes every hour by default (customizable via the online account).
Locally Operating the ADC-T2000
Waking the Device
- Press any button to wake the thermostat.
- The display shows the current mode and room temperature.
Note: To configure the thermostat display to remain on, visit the Thermostat Display Settings page.
Adjusting the Setpoint and Mode
- Press ▲ or ▼ once to view the current setpoint.
- The mode icon (HEAT or COOL) begins pulsing.
- Press ▲ or ▼ again to adjust the temperature.
- Press Mode to change between HEAT, COOL, AUTO, EMER, or OFF.
- EMER mode is available for heat pump systems (press and hold Mode in heat mode).
- In AUTO mode, the brighter icon indicates which setpoint is currently active.
- After 5 seconds, the display returns to room temperature.
If powered by a C-wire, the display stays lit. If powered only by batteries, the display turns off after 5 seconds to save energy but continues normal operation.
