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Replacement for FireAngel ST-622 10 Year Smoke Alarm - UltraFire ULLS10

4.7 out of 5 stars
£22.43 inc VAT
£18.69 ex VAT
Product Overview

The FireAngel ST-622 Thermoptek optical smoke alarm, technology of choice for the UK Fire & Rescue Services, has been discontinued by the manufacturer. The UltraFire UFFASTAP adaptor plate enables an UltraFire ULLS10 smoke alarm to fit your existing baseplate for a direct replacement without any DIY, tools, or needing to drill new holes on your ceiling.

The UltraFire ULLS10 is powered by a sealed 10 year battery that will not need replacing for the full lifespan of the alarm, and will activate automatically when installed. The adaptor plate simply twists onto your existing ST-622 base plate and provides an ideal and quick solution for the replacement of this alarm. Like the FireAngel ST-622, the UltraFire ULLS10 optical smoke alarm features an end of life warning which can be silenced for up to 10 hours should it occur during the night, and for additional peace of mind it is backed with a 10 year manufacturer's warranty.

  • 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
  • Includes UltraFire Adaptor Plate designed to easily replace old FireAngel ST-622 alarms with the UltraFire ULLS10
    • Removes the requirement to drill additional holes or redecorate when replacing alarms
    • Fits onto existing FireAngel ST-622 base plates
    • Simple twist-on installation
  • Automatic activation when attached to the base plate
  • End of life / low battery chirps can be silenced up to 10 hours
  • Large combined test and silence button
  • Compliant with BS 5839-6: 2019 Grade F1 installations
  • CE and UKCA marked
  • Kitemarked to BS EN 14604: 2005

Please Note: The UFFASTAP adaptor plate is used for mounting the ULLS10 smoke alarm to an existing FireAngel ST-622 base plate – do not use the standard base plate included in the box with the ULLS10 smoke alarm as well. The standard base plate is only intended for use on its own to directly mount an ULLS10 to the ceiling


This adaptor plate has been designed for use with an UltraFire 10 year alarm in order to help customers replace popular, discontinued FireAngel alarms as easily as possible. By utilising this adaptor plate and the existing base plate on your ceiling, there is no need for any tools, for drilling new holes, or to cover up marks from the previous installation.

In order to replace your old FireAngel alarm, please follow these steps:

  1. Rotate the old FireAngel alarm anti-clockwise to remove it from the base plate
  2. Remove your new UltraFire alarm from the box and discard the standard base plate supplied with it
  3. Rotate the UltraFire alarm clockwise onto the adaptor plate until you hear a click
  4. Test the UltraFire alarm as per the instruction manual to confirm it is working properly before fitting it to the ceiling
  5. Rotate the UltraFire alarm and adaptor plate clockwise onto the old FireAngel base plate that is still attached to the ceiling
    • The outside edge of the adaptor should travel approximately 3cm
Technical Data
Product Code FAST622
Alternative Product Codes FAST622, ST622, ST-622, ST-622T, ST-622Q, ULLS10
Battery Type

10 Year Sealed Lithium



Dimensions (HxDia)

Adaptor Plate: 3.8 x 117mm

ULLS10 Optical Smoke Alarm: 34 x 84mm

Operating Temperature

5°C to 30°C

Relative Humidity

< 85%

Sound Output


Storage Temperature

5°C to 30°C


10 year manufacturer's warranty

Weight 0.10kg
Product Datasheets

Pricing & Availability

Model Stock Price
Product Code: FAST622 Stock Level:
More than 20 in stock Expected dispatch: Today

£22.43 inc VAT

£18.69 ex VAT

Delivery Options

The following delivery options are available on this product.

Free Economy Delivery

Free of Charge - Orders will be delivered in 5-7 working days with Evri

Standard Delivery

£3.19 inc VAT - Orders will be delivered in 2-3 working days with Evri

Next Working Day Delivery

£6.19 inc VAT - Orders will be delivered the next working day with Evri

For dispatch today order within

Excellent Warranty

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

Customer Reviews

30 customers have given this product an overall rating of 4.7 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: E S

Does what it says on the box Excellent service

Published on: 23rd May 2024

Rating: 4 / 5 Stars

Reviewed by: P N

so far so good

Published on: 20th May 2024

Rating: 5 / 5 Stars

Reviewed by: m c

Really easy to replace the new smoke detector

Published on: 24th December 2023

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Looking for more information?

If you have any questions or would like more information about this product you can ask one of our specialists.

Direct Telephone 01507 464181


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