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Enable or disable Thermostat Lock on an Alarm.com Smart Thermostat

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The thermostat lock option locks all physical controls on the Alarm.com Smart Thermostat (ADC-T40K-HD, ADC-T2000, ADC-T3000, and ADC-T25) so that they can only be changed from a computer or mobile device. A partial lock will allow setpoint changes but will prevent mode changes on the thermostat.

Enable or disable Thermostat Lock

  1. Log in to Alarm.com app.
  2. In the Thermostats card, tap Details.
  3. Tap Configure.
    • For accounts with multiple thermostats, tap the desired thermostat.
  4. Using the Thermostat Lock dropdown menu, select the desired setting:
    • Disabled mode - Setpoint changes can be made from the thermostat, website, or app.
    • Enabled mode - Setpoint changes can only be made from the website or app.
    • Partial mode - Setpoint changes can be made from the thermostat, website, or app. Mode changes can only be made from the website or app.
  5. Tap Apply.
  1. Log in to the Alarm.com customer website.
  2. In the Thermostat card, click Details.
  3. Click Advanced Configuration.
  4. In Thermostat Lock, select the desired setting:
    • Disabled mode - Setpoint changes can be made from the thermostat, website, or app.
    • Enabled mode - Setpoint changes can only be made from the website or app.
    • Partial mode - Setpoint changes can be made from the thermostat, website, or app. Mode changes can only be made from the website or app.
  5. Click Save.

Note: This is currently the only Alarm.com Smart Thermostat that has local steps to enable and disable the lock. 

  1. Tap any button to wake the screen.
  2. Tap More.
  3. Use the arrow buttons to navigate to and select SETTINGS.
  4. Select INSTALLER.
  5. Select CONTINUE.
  6. Select LOCK.
  7. To enable, select PARTIAL or FULL. Take note of the PIN displayed and select CONTINUE. 
  8. To disable, use the arrow buttons to enter the PIN displayed when it was enabled, and select UNLOCK or change the type of lock enabled by selecting PARTIAL or FULL.
    • If you do not know the PIN, the last four digits of the serial number may be used instead. The serial number can be read from the back of the thermostat after removing it from the back plate.

Note: If the Security Panel (or other Z-Wave Controller) becomes unresponsive, a full reboot (i.e., removing AC and battery power) of the thermostat will bypass the local thermostat lock on any ADC-T2000 or ADC-T3000 with Z-Wave version 1.2+. 
To bypass the local thermostat lock from an ADC-T40K-HD, hold the Locked icon on the thermostat screen for 10 seconds.