Honeywell Home DT4R Programmable wireless thermostat white. 7 day program (without switching unit BDR91)

DTS42WRFST20
(DT4R) is a wireless digital room thermostat with a modern design
with a backlit display. It enables precise temperature control in both residential and
commercial spaces and contributes to greater comfort and energy savings.
With simple operation, long battery life and reliable
wireless communication, it is the ideal complement for smart heating systems.

Technical parameters

Product code: DTS42WRFST20
Type: wireless digital room thermostat
Communication: RF (868 MHz, range up to 30 m indoors)
Display: Backlit LED segmented, easy to read
Temperature setting range: 5 °C - 35 °C
Control accuracy: ±0.5 °C
Sensor: 10 k? NTC (internal)
Modes: heating/cooling, economy mode, Boost function
Control algorithm: TPI / fuzzy logic for continuous control
Freeze protection: minimum 5 °C
Power supply: 2 × AA batteries (lifetime approx. 1.5 years)
Dimensions (h × w × d): approx. 101 × 101 × 54 mm
Weight: approx. 0.10 kg
Certification: EMC, LVD, R&TTE, ErP class V (+3 %)


Use in the Evohome system
The DTS42WRFST20 can be fully integrated into the Evohome system
as a room thermostat. It is particularly suitable for rooms where
the thermostatic head is placed in an inconvenient location (e.g. behind
a curtain, furniture or cover) and cannot detect the temperature correctly. V
such cases, the DTS42WRFST20 serves as the main sensor of the room
For stand-alone use, the BDR91 switching unit must be used as the main temperature control unit and provides accurate heating control.