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Honeywell Home DT4R White Thermostat & Wireless Relay Box Pack

Pack Contains:

  • 1 x DT4R White Thermostat
  • 1 x Wireless Relay Box (as pictured)

Product Overview

Introducing the Honeywell Home DT4R Room Thermostat: The Smart Choice for Efficient Temperature Control

The Honeywell Home DT4R room thermostat is an ideal addition to your Honeywell Home Evohome system. Its sleek and modern design offers easy and reliable temperature control with an intuitive interface and a large LED display that makes it even more convenient.

Moreover, the DT4R is designed to work seamlessly with a range of energy-efficient solutions. It is compatible with 24-230 V On/Off appliances such as gas boilers, combi-boilers, and heat pumps. It also integrates with smart devices such as the Honeywell HomeĀ EvohomeĀ and theĀ HCC100 Underfloor Multi-Zone Controller.

Additionally, the DT4R comes in both wired and wireless versions, making it suitable for almost any setup. It is also backward compatible with existing Honeywell Home RF products and supports OpenThermĀ® appliances, adding to its flexibility.


  • Backwards and forwards compatibility, thanks to Ramses II & Ramses III RF protocol.
  • Can be installed standalone* or part of an existing heating system*, including conventional and combi boilers, as well as new heating systems.
  • Easy-to-read LED-based display with energy-efficient technology that turns off when not in use.
  • Integration with smart devices, such as Honeywell Home Evohome and the HCC100 Underfloor Multi-Zone Controller.
  • Backlit, captive touch buttons for ease of use.
  • Built-in eco-mode to help save money and reduce environmental impact by reducing room temperature for a set time period.
  • Wired versions also available to suit almost any installation.

This Wireless Relay Box transmits on 868MHz using Ramses 2 protocol and is able to switch on and off central heating components with 230v or volt free switching (max current 5A).

Honeywell Home DT4R Room Thermostat Features:

The Honeywell Home DT4R room thermostat is a versatile heating control option. It is compatible with a wide range of heating systems, including conventional and combi boilers. Its LED-based display is energy-efficient and easy to read, with the ability to turn off when not in use.

Furthermore, the thermostat integrates with smart devices such as the Honeywell HomeĀ EvohomeĀ and theĀ HCC100 Underfloor Multi-Zone Controller, expanding its capabilities. Its backlit, captive touch buttons make it easy to use, and the built-in eco-mode lowers room temperature for a set time period to reduce energy consumption.

In addition, the thermostat features a boost mode that increases room temperature for a set time period when needed. Its backward and forward compatibility, including support for OpenThermĀ® technology, adds to its flexibility and convenience.

In summary, the Honeywell Home DT4R room thermostat is the perfect solution for efficient temperature control. With its sleek design, easy-to-use interface, and compatibility with a range of energy-efficient solutions, it’s the smart choice for any home.

Honeywell Home DT4 BrochureĀ 

Honeywell Home DT4 Product Data


Application On/off boiler (230V), Combi boiler, Heat Pump, 2-Port Zone Valve
Approvals and Standards EMC: 2014/30/EU, LVD: 2014/35/EU, R&TTE: 1995/5/EC
Display Functions Heat, Cool, Wireless Signal, Eco, Off, Low Battery, Warning
Modes of Operation Heating, Cooling
Alerts and Reminders Battery Replacement
Power Supply Thermostat: Powered by 2 X AA Batteries
Radio Frequency ISM 868.0-868.6 MHz
Radio Frequency Transmitting Range (Max) 30 m in residential building environment
Color White
Sensor Type 10k (@25 Ā°C) NTC thermistor
Ambient Operating Temperature (Max) 40 Ā°C
Ambient Operating Temperature (Min) 0 Ā°C
LED Functions Communication with thermostat, Binding mode, Delete binding
ErP Class Class V (+3 %)
Control Functions Fuzzy Logic
Cycle Rate Selectable by application
Set point Temperature (Max) 35 Ā°C
Set point Temperature (Min) 5 Ā°C



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