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Replacement for FireAngel SI-610 10 Year Smoke Alarm

4.8 out of 5 stars
£17.75 inc VAT
£14.79 ex VAT
Product Overview

The FireAngel SI-610, an extremely popular ionisation smoke alarm, was discontinued by the manufacturer in 2018. Firehawk has developed an easy to fit adaptor plate to accommodate their leading FHB10 optical smoke detector, powered by a 10 year sealed lithium battery. The cleverly designed adaptor plate simply clicks into your existing base plate with no need to drill any more holes in your ceiling and provides a base plate for the new alarm.

The Firehawk FHB10 optical smoke alarm features a large test and silence button for easy weekly testing and can silence low battery warning chirps up to 10 hours. Featuring improved smoke detection with TSE technology and an X-Profile detection sensor chamber, specifically designed to reduce false alarms.

  • FREE delivery
  • Suitable for installations in hallways, landings, living areas and bedrooms
  • Battery: 10 year sealed lithium battery
  • Warranty: 10 years manufacturer's warranty
  • Automatic activation when attached to base plate
  • Improved smoke detection with TSE (Thermal Stability Enhancement) technology
  • Specifically designed X-Profile detection sensor chamber to reduce number of false alarms
  • Combined test and silence button almost covering the face of the alarm
  • End of life / low battery warning alarms can be silenced up to 10 hours
  • Compliant with BS 5839-6: 2019 Grade F1 installations
  • CE marked and Kitemarked to BS EN 14604: 2005
  • Supplied with adaptor plate and FHB10 optical smoke alarm from Firehawk

Please Note: The FHSAP adaptor plate is used for mounting the FHB10 smoke alarm to an existing FireAngel SI-610 base plate – do not use the standard base plate included in the box with the FHB10 smoke alarm as well. The standard base plate is only intended for use on its own to directly mount an FHB10 to the ceiling.

Technical Data
Product Code FASI610
Alternative Product Codes SI-610, SI-610x20, ST-622, SI610, ST622
Brand Firehawk
Battery Type

10 Year Sealed Lithium

Dimensions (HxDia)

Adaptor Plate: 3.8 x 117mm

FHB10 Optical Smoke Alarm: 34 x 84mm

Operating Temperature

5°C to 30°C

Relative Humidity

< 85%

Sound Output



10 Years

Weight 0.24kg
Product Datasheets
FAQs (2)
Q. Can a smoke alarm be fitted with a sticky adhesive pad in a let property?

The sticky pad is suitable for all battery operated smoke alarms. However, we cannot judge if battery alarms are suitable for your let property, as let properties usually require mains powered alarms. There is some advice to this in the governments guides to fire risk assessments. Also see the LACoRS guide for let properties.

Q. What sort of smoke alarm system would I need to install for a HMO?

BS 5839-6 recommends that one or two storey HMOs with an individual floor area of no more than 200sqm (not the total of both floors) should have a Grade D smoke alarm system installed. Grade D refers to mains powered smoke alarms with a back up battery power supply. The alarms can be interlinked either by wire or by radio signal and the system does not require a separate fire alarm panel. For HMOs of 3 storey or higher, a Grade A panel system would need to be installed. This can cover the whole of the building, or can be used just for the communal areas with a separate Grade D system installed for the individual dwellings. For both applications, the level of cover should be a minimum of LD3 (in all escape routes) but this may change according to the fire risk assessment.

Pricing & Availability

Model Stock Price
Product Code: FASI610 Stock Level:
Out of stockExpected dispatch: N/A

£17.75 inc VAT

£14.79 ex VAT

Excellent Warranty

This product is supplied with a 10 year manufacturers warranty as standard

Customer Reviews

218 customers have given this product an overall rating of 4.8 out of 5

Reviews by real customers

All of our product reviews are written by real customers that have purchased this product from us and are published without modification.

Rating: 5 / 5 Stars

Reviewed by: S L

Excellent product, easy to instal

Published on: 16th February 2022

Rating: 5 / 5 Stars

Reviewed by: A G

Based on previous alarm, great product, long lasting, easy to fit, no unnecessary setting off of alarm. good long lasting product, sits quiet in the background BUT there when needed...

Published on: 22nd November 2021

Rating: 5 / 5 Stars

Reviewed by: A G

really simple to fix on to the base of the outdated version I had previously

Published on: 27th September 2021

Rating: 5 / 5 Stars

Reviewed by: D W

Quick excellent service

Published on: 14th July 2021

Rating: 5 / 5 Stars

Reviewed by: K M

Quick reliable service.

Published on: 3rd July 2021

Rating: 5 / 5 Stars

Reviewed by: N G

An excellent service, will definitely use again Thoroughly recommended. Thank You!

Published on: 13th May 2021

Rating: 5 / 5 Stars

Reviewed by: G H

V good product despatched promptly good service

Published on: 11th May 2021

Rating: 5 / 5 Stars

Reviewed by: A G

Very helpful advice getting new alarm, prompt felivery

Published on: 19th April 2021

Rating: 5 / 5 Stars

Reviewed by: A E


Published on: 9th April 2021

Rating: 5 / 5 Stars

Reviewed by: M S

I was able to use the previous fitting so it was extremely easy to fit the replacement in place Very clear information on the website and a quick and efficient service. Would definitely recommend.

Published on: 8th March 2021

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