Alarm.com Smart Thermostat HD (ADC-T40K-HD)
Quick facts
| Device Image |
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|---|---|
| Manufacturer | Alarm.com |
| Power Requirements |
24 VAC with C-Wire |
| Alarm.com Auto Mode | Yes. Requires both heat and cool stages. |
| Local Thermostat Schedules |
Yes. Only when not enrolled to a Z-Wave network. |
| Z-Wave Security 2 (S2) | Yes |
| Z-Wave SmartStart | Yes |
| Z-Wave Enrollment |
If the Z-Wave controller is not SmartStart or S2-compatible, this device can be enrolled in the traditional way as an S0 device.
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| Factory Reset |
To reset using the Display:
To reset without using the Display:If you are unable to use the Display, you may also reset the device to factory settings from the Thermostat. Note: It is recommended to delete the Smart Thermostat HD from the Z-Wave network before performing this reset.
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on the Display.Installation guides
- Alarm.com Smart Thermostat HD (ADC-T40K-HD) - Installation GuideThis guide provides instruction for installation and configuration of the Alarm.com T40K thermostat.
User guides
How-to troubleshooting guides
Frequently asked questions
- Can the Smart Thermostat HD (ADC-T40K-HD) be powered by batteries?No. The Smart Thermostat HD cannot be powered by batteries. It requires a C wire for power.
- Should a physical jumper be used with the Alarm.com Smart Thermostat HD (ADC-T40K-HD)?Do not use a physical jumper between RH and RC on the Smart Thermostat HD because it can damage the thermostat over time and cause wire detection to complete incorrectly.
- What are the components of the Smart Thermostat HD (ADC-T40K-HD)?Three components make up the Smart Thermostat HD: Trim plate Thermostat (ADC-T40) Display (ADC-T40-HD): Trim plate, thermostat, display
- Why does the Smart Thermostat HD (ADC-T40K-HD) setup wizard recommend a different HVAC system than expected?The Thermostat has mechanical wire detection in the wire terminals, meaning any terminal with a wire inserted will indicate there is a wire present during setup, even if the wire is unused by the HVAC system. Sometimes there are extra, unused wires present within the wire bundle at the wall.
Videos
General information
- Alarm.com Smart Thermostat - Frequently Asked QuestionsThis article lists answers to frequently asked questions regarding Alarm.com thermostats.