Key Features

• Slim, contemporary design
• White finish
• Large LED display
• Easy-to-use wake up button
• Frost protection setting at off position prevents pipes from freezing
• Eco Offset allows a timed offset temperature for Eco mode when cooling and heating       
• Designed for wired, on-the-wall installations
• Flip-up wiring platform for easy wiring                   
• Compatible with hybrid and greener energy systems
• Compatible with 24–230V on/off appliances such as combi boilers, gas boilers, and heat pumps
• Works with energy-efficient solutions like zoning and underfloor heating and cooling devices
• Works with zone valve applications (does not work with 240V electric heating)

Honeywell DT4 Wired Room Thermostat - DT40WT20 Overview

The Honeywell DT4 wired room thermostat features a slim, contemporary design in an attractive white finish. With its easy-to-operate wake-up button and large, clear LED display, it offers simple functionality for controlling the temperature of your home.

An integral frost protection setting at the off position maintains a temperature of at least 5°C, preventing pipes from freezing.

Wired Installation

The DT4 wired thermostat is designed for wired, on-the-wall installations and features a flip-up wiring platform to make wiring easy. It’s compatible with 24–230 V on/off appliances such as combi boilers, gas boilers, and heat pumps and works with hybrid and greener systems alike.