FireAngel Pro ST-230 Thermoptek Smoke Alarm Product Code: 6789D

Mains powered 230V smoke alarm with a 10 year, sealed for life lithium battery back-up. Modern design. Quick fitting, tamper-proof mounting plate with hinge function locks the alarm head securely in place. Mounting plate has wide, easily accessible connection to the mains feed. Cable knock-out allows for compatibility with YT2 cable trunking.


  • 85dBA Alarm
  • Mains & Battery-Powered
  • 2 Year Manufacturer's Guarantee (T&Cs Apply)
  • Quick Fitting, Tamper-Proof Mounting Plate
  • Large Test Button


230V. EN 14604: 2005.
Additional Information
Technical Specification
  • Power Source : Mains & Battery-Powered
  • Brand : FireAngel Pro
  • Product Type : Thermoptek Smoke Alarm
  • Alarm Product Type : Smoke
  • Model Name : Thermoptek
  • Fixings Supplied : Fixings Supplied
  • Total Product Weight : 0.257 kg
  • Model No : ST-230
  • Battery Duration : 10-Year Sealed Battery (Lithium)
  • Wireless/Wired : Wired
  • Alarm Sensor Type : Optical
  • Battery Type : Lithium
  • Colour : White
  • Product Depth : 52 mm
  • Pack Size : 1
  • Power Voltage Supply : 230 V
  • Product Diameter : 141 mm
  • Manufacturer Guarantee : 2 Year Manufacturer's Guarantee (T&Cs Apply)
  • Pieces in Pack/Case : 1
Product Contents
Delivery & Returns


Standard delivery: €15

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Was €47.45

Special Price €39.45

Incl. 20% VAT

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FireAngel Pro ST-230 Thermoptek Smoke Alarm is rated 4.4 out of 5 by 13.
Rated 5 out of 5 by from Fantastic Smoke Alarm I purchased two of these from my local friendly ScrewFix store. A very good product at a great price. I particularly like the ability to link the units together to sound the alarm all over the house.
Date published: 2017-08-20
Rated 5 out of 5 by from Easy install smoke alarm Very easy to install smoke alarm which can be battery or mains powered. Easy to interlink with other fireangel products too.
Date published: 2017-08-11
Rated 5 out of 5 by from Easy to fit Had to buy 2 of these to replace previous mains alarms. Very quick and easy to fit
Date published: 2017-01-13
Rated 5 out of 5 by from Optical and thermal detection Good detector and easy to replace for existing old ones onto surface patress. Would be ideal for surface installation as has YT2 trunking entry point. I bought 2 for replacing old detectors in a rented property. Interlink wire not compatible with other brands so linked FireAngel detectors together only and heat / co2 detector of different brand hardwired to circuit with no Interlink but all alarms loud enough to hear in 2 bedroom semi detached house. 4 stars for reliability as just fitted but have 2 year guarantee which if they go faulty you can take back to store for replacement.
Date published: 2017-01-07
Rated 4 out of 5 by from slight problem instructions are clear, specification looks good. Snag is, there is no information when you buy the smoke alarm to tell you, you can only interconnect to other St 230s. So you will need to replace all alarms that are interconnected. If you try to connect to a different alarm, the st-230 will trigger.
Date published: 2017-01-02
Rated 4 out of 5 by from Great a moke alarm Very gd product, easy to install and does the job at hand
Date published: 2017-01-02
Rated 5 out of 5 by from Best looking smoke alarm Best aesthetically pleasing smoke detectors I've installed, great that it had 10 year battery life
Date published: 2016-05-13
Rated 4 out of 5 by from Faulty product Ist one did not work had to return it. 2nd one did not work. Had to contact manufacturer who sent me one by post. Working at last . Easy to fit good alarm.
Date published: 2016-01-22
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