Honeywell DT90E Digital Room Thermostat + ECO Product Code: 41365

Includes ECO button with countdown display for energy saving mode. CE marked. Conforms to protection requirements of 2006/95/EC & 2004/108/EC. WEEE & RoSH compliant.


  • Digital Display
  • Mains or Low Voltage Switching
  • 1 Year Guarantee
  • Mains or Low Voltage Switching


Switch/contact rating: SPDT. 8A. Temp. range: 5°-35°C. H x W x D: 92 x 90 x 29mm. 2 x AA batteries supplied.
Additional Information
Technical Specification
  • Brand : Honeywell
  • Product Height : 92 mm
  • Display Type : Digital Display
  • Product Type : Digital Room Thermostat + ECO
  • Zoning Level : One
  • Central Heating Control Type : Thermostats
  • Total Product Weight : 0.15 kg
  • Model No : DT90E
  • Product Width : 90 mm
  • Temperature Range : 5-35 °C
  • Product Depth : 29 mm
  • Pack Size : 1
  • Switch Type : SPDT
  • Compatible Boiler Type : All Boilers
  • Manufacturer Guarantee : 1 Year Guarantee
  • Pieces in Pack/Case : 1
Product Contents
Delivery & Returns


Standard delivery: €15

Free delivery on all orders over €70.00

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€41.45 Incl. 20% VAT

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Honeywell DT90E Digital Room Thermostat + ECO is rated 4.4 out of 5 by 133.
Rated 5 out of 5 by from Excellent Replaced old mechanical thermostat. Very easy to fit and the temperature reading seems accurate. Easy to adjust.
Date published: 2019-06-25
Rated 5 out of 5 by from Honeywell 90DTE Thermostat Replaced 25 year old Sunvic TLM 2253 mechanical thermostat with a very wide temp swing. Very easy DYI job with old neutral and earth wires capped. Fitted old screw holes so all done in 30 minutes. Room temperature display appears very accurate.
Date published: 2019-05-26
Rated 5 out of 5 by from Really reliable kit Easy to fit even for the diy’er Far better than an analog , accurate to 2 deg unlike the analog which was 6-7 deg out. Would recommend
Date published: 2019-04-13
Rated 5 out of 5 by from DIYer Replaced Honeywell mechanical thermostat. It was an exact fit so no messing about. Only needed two of the four available wires so earth and neutral capped off for another day. Easy to use and appears to be very accurate.
Date published: 2019-04-05
Rated 4 out of 5 by from Digital room stat Good product, easy to connect up, bit fiddly to open up again once clicked together but simple to use.
Date published: 2019-03-03
Rated 5 out of 5 by from Excellent Thermostat Bought this to replace a very old Drayton RTS1 room thermostat. Easy to fit once I discovered that it needed only 2 wires - live in (Terminal A and switch live (Terminal B). Do not use the neutral. There is a small piece of cardboard isolating one of the battery terminals underneath the front cover that needs to be removed. Very accurate, and marked difference in, temperature management; boiler does not stay on as long as previously. Overall, excellent, good value product
Date published: 2019-02-22
Rated 5 out of 5 by from Easy to use and install Easy to install, looks good. Competitive price, and well made.
Date published: 2019-02-20
Rated 5 out of 5 by from Easy to use basic thermostat This thermostat has enabled accurate control of our room temperature only varying by a maximum of 0.5 degrees. It regularly brings the boiler on for short intervals in order to keep the temperature topped up. Controls are very easy to use, one push of the button reviews current temperature setting with further pushes stepping the temperature up or down in steps of half a degree. The normal continuous easy to read display shows the current room tempersture. I'm confident this must of saved on our gas usage.
Date published: 2019-02-17
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