Hortsmann CentaurPlus C27 Programmer with Li-Ion Battery Back-Up Product Code: 68934

Separate timing. 5-wire installation. Override facility. Automatic BST/GMT time change. Boost function.


  • 7 Day Programmable
  • Digital Display
  • 3 On/Off Periods per Day
  • Suitable for Gravity-Fed & Pumped Systems
  • 2 Year Manufacturer's Guarantee
  • 1 Pre-Set Programme
  • IP30
  • Automatic BST/GMT Time Change
  • 2 Year Manufacturer's Guarantee (T&Cs Apply)


Switch/contact rating: 3(1)A at 230V. Temperature range: 0-40°C. H x W x D: 84 x 150 x 29mm.
Additional Information
Technical Specification
  • Brand : Horstmann
  • Product Height : 84 mm
  • Display Type : Digital Display
  • Product Type : Programmer with Li-Ion Battery Back-Up
  • Programme Facility : 7 Day Programmable
  • Central Heating Control Type : Programmers
  • Model No : CentaurPlus C27 Programmer
  • Product Width : 150 mm
  • Temperature Range : 0-40 °C
  • Product Depth : 29 mm
  • Pack Size : 1
  • Suitable System : Suitable for Gravity-Fed & Pumped Systems
  • Installation Type : 5-Wire Installation
  • Power Voltage Supply : 230 V
  • Manufacturer Guarantee : 2 Year Manufacturer's Guarantee (T&Cs Apply)
  • Pieces in Pack/Case : 1
Product Contents
Delivery & Returns


Standard delivery: €15

Free delivery on all orders over €70.00

Click here to see information on our delivery charges and times



Hopefully you won't need to return an item, however, if you do, it is our aim to make this as simple as possible. By following the guidance below you can help us to help you when a product is not what you expected, or is faulty. Your statutory rights are not affected by this guidance.


Click here to see information on returns and cancellation

€59.95 Incl. 20% VAT

Add to Wishlist

More Items to Consider

Loading... Loading...
Hortsmann CentaurPlus C27 Programmer with Li-Ion Battery Back-Up is rated 4.4 out of 5 by 53.
Rated 5 out of 5 by from Great simple programmer Easy to install & fit; Screwfix always seem to have what I need in an emergency
Date published: 2018-12-02
Rated 4 out of 5 by from Flomaster Programmer Good timer but expensive for my liking but I was replacing a broken one & the easiest way was to just replace like for like as that meant no time spent wiring. All the wiring is on the back plate so the actually timer just clicks on & is secured by two screws from underneath.
Date published: 2018-11-24
Rated 5 out of 5 by from Programmer Programmer does the job. The universal back plate is the big decider. One off one on. Simples.
Date published: 2018-01-27
Rated 5 out of 5 by from Hortsmann 2 Ch Programmer .. Needed a replacement programmer a few days before Xmas, this came up on my search. Very quick 'click & collect', easy to fit, put a smile back on my wifes face as the heating kicked back in ... job done!!
Date published: 2018-01-02
Rated 4 out of 5 by from Very flexible programming I bought this to replace a failed Hortsmann mechanical timer. I had to use the new backplate but there was a minimal amount of wiring changes to be made. It gives us far more flexibility in setting the programmes. Each day can be different and the hot water is separate from the Central Heating.
Date published: 2017-11-30
Rated 5 out of 5 by from Horstmann C27 Programmer I bought this as a replacement for the Series 1 where the hot water function had failed. The Series 2 is an improvement with its automatic GMT/BST adjustment and illuminated display. I just hope its clock keeps better time than my previous Horstmann programmers which were out by a minute per week. It is a compact, easy to use unit with good instructions and fits a standard back plate.
Date published: 2017-11-24
Rated 5 out of 5 by from easy to use Good value programmer. As I only installed this item recently, I can only give 4 stars for reliability although it does appear to perform well. I did have to fit another wiring box along side as there was not enough room for all the wiring , The back-lit display is useful.
Date published: 2017-11-08
Rated 5 out of 5 by from Hortsmann CentaurPlus C27 good value . replaced potterton timer only little snag was cable space asold timer had complete room for cables and only half here so took time to reorganise cables.
Date published: 2016-02-12
  • y_2019, m_9, d_17, h_6
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.13
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_53
  • loc_en_GB, sid_68934, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_screwfix-ie