Honeywell Home DT4 Black Wired Room Thermostat | DT40BT22 On/Off Digital Heating Control
The Honeywell Home DT4 Black Wired Room Thermostat DT40BT22 is a modern digital thermostat providing precise room temperature control for heating systems in homes and apartments. Featuring a large clear LED segment display with energy-efficient auto-off technology and simple wake-up button operation, it combines slim design with reliable performance.
Key Features
- Energy-efficient LED display automatically turns off when not in use to save battery life.
- Backlit captive touch buttons for intuitive operation day or night.
- Built-in eco-mode reduces room temperature for set periods to save energy.
- Fuzzy Logic control optimises boiler on/off cycles for precise temperature maintenance.
- Compatible with hybrid and green systems including heat pumps, zoning, and underfloor heating.
- Low battery warning and simple AA battery replacement.
Why Choose Honeywell Home DT4 Black?
Modern slim design with proven Honeywell reliability, this thermostat offers straightforward operation for all users while providing advanced energy-saving features and broad system compatibility.
ErP Class IV (+2%) rating ensures compliance with current efficiency standards for heating controls.
Suitable For
- Gas boilers, combi boilers, and heat pumps (24-230 V on/off control).
- 2-port zone valve applications in multi-zone heating systems.
- New installations and replacements in domestic environments.
Technical Specifications
- Brand: Honeywell Home by Resideo
- Model: DT4 Black Wired Room Thermostat
- MPN: DT40BT22
- GTIN: 5059085002633
- Control Type: On/Off (24-230 V)
- Power Supply: 2 x AA batteries (included)
- Battery Life: Approx. 3.5 years
- Set Point Range: 5 °C to 35 °C
- Display Range: 0 °C to 40 °C
- Sensor: 10k NTC thermistor @ 25 °C
- Switching Capacity: 3 A resistive, 1 A inductive
- Switch Type: SPDT
- ErP Class: Class IV (+2 %)
- Dimensions: 101 x 101 x 23 mm
- Weight: 0.17 kg
- Wiring: Up to 2.5 mm² terminals
- Operating Temperature: 0 °C to 40 °C
- Warranty: 2 years
Installation & Operation
Simple wall-mounted wired installation with flip-up wiring platform. User menu allows heating/cooling selection, eco offset duration, and frost protection (minimum 5 °C). Installer menu provides cycle rate adjustment, setpoint limits, and factory reset functions.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Honeywell Home DT4 Black Wired Room Thermostat DT40BT22 is a modern digital thermostat providing precise room temperature control for heating systems in homes and apartments. Featuring a large clear LED segment display with energy-efficient auto-off technology and simple wake-up button operation, it combines slim design with reliable performance.
Key Features
- Energy-efficient LED display automatically turns off when not in use to save battery life.
- Backlit captive touch buttons for intuitive operation day or night.
- Built-in eco-mode reduces room temperature for set periods to save energy.
- Fuzzy Logic control optimises boiler on/off cycles for precise temperature maintenance.
- Compatible with hybrid and green systems including heat pumps, zoning, and underfloor heating.
- Low battery warning and simple AA battery replacement.
Why Choose Honeywell Home DT4 Black?
Modern slim design with proven Honeywell reliability, this thermostat offers straightforward operation for all users while providing advanced energy-saving features and broad system compatibility.
ErP Class IV (+2%) rating ensures compliance with current efficiency standards for heating controls.
Suitable For
- Gas boilers, combi boilers, and heat pumps (24-230 V on/off control).
- 2-port zone valve applications in multi-zone heating systems.
- New installations and replacements in domestic environments.
Technical Specifications
- Brand: Honeywell Home by Resideo
- Model: DT4 Black Wired Room Thermostat
- MPN: DT40BT22
- GTIN: 5059085002633
- Control Type: On/Off (24-230 V)
- Power Supply: 2 x AA batteries (included)
- Battery Life: Approx. 3.5 years
- Set Point Range: 5 °C to 35 °C
- Display Range: 0 °C to 40 °C
- Sensor: 10k NTC thermistor @ 25 °C
- Switching Capacity: 3 A resistive, 1 A inductive
- Switch Type: SPDT
- ErP Class: Class IV (+2 %)
- Dimensions: 101 x 101 x 23 mm
- Weight: 0.17 kg
- Wiring: Up to 2.5 mm² terminals
- Operating Temperature: 0 °C to 40 °C
- Warranty: 2 years
Installation & Operation
Simple wall-mounted wired installation with flip-up wiring platform. User menu allows heating/cooling selection, eco offset duration, and frost protection (minimum 5 °C). Installer menu provides cycle rate adjustment, setpoint limits, and factory reset functions.
