Alarm.com ADC-T40K-HD Smart Thermostat HD
 
 
Description
The ADC-T40K-HD is a smart thermostat designed to control heating and cooling systems through the Alarm.com platform. It features a color touchscreen display and supports automation, remote control, and scheduling through Alarm.com.
The thermostat integrates with compatible HVAC systems and supports advanced system configurations including multi-stage heating and cooling, humidity control, and ventilation management.
 
Key Features
Color touchscreen display
Z-Wave SmartStart and S2 compatibility
Remote control and automation through Alarm.com
Setup wizard with wire detection and auto configuration
Supports humidity and ventilation control
Compatible with multi-stage HVAC systems
 
Specifications
Power: 24 VAC (C-wire required)
Dimensions: 4.7 × 4.7 × 1.07 in (12 × 12 × 2.72 cm)
Operating Temperature: 41°F to 95°F (5°C to 35°C)
Communication:
Z-Wave SmartStart
Z-Wave S2 Authenticated / Unauthenticated
HVAC Compatibility
Near universal 24V compatibility
Heat: Up to 3 stages
Cool: Up to 2 stages
Heat pump compatible (O and B systems)
Dual fuel systems supported
Supports humidifier and dehumidifier
Ventilation control (HRV, ERV, external air baffle)
 
Compatibility
Designed for use with Alarm.com systems and services
Important Notes
Requires a C-wire (24 VAC power)
Designed for 24V HVAC systems only
All scheduling and automation is managed through the Alarm.com platform