At FireAngel, we're dedicated to protecting and improving our customers’ lives by creating innovative, cutting-edge fire safety technology that is both practical and accessible. The FireAngel FA6620-R Optical Smoke Alarm has been designed to make protecting your home simple, with an easy installation process, fewer false alarms, and rigorous testing.
Designed to replace the ST-622 and ST-620 smoke alarms, the baseplate is identical to the ST-622, making replacements quick and easy.
FireAngel: Smarter solutions for safer homes.
| Sensor Type | Optical |
| Battery Type | Sealed-for-life lithium battery |
| Alarm Sound Level | 85dB(A) at 3m (minimum) |
| Installation Positions | Wall or ceiling |
| Operating Temperature | +4°C to +38°C |
| Operating Humidity | Up to 90% RH (non condensing) |
| Storage Temperature | -20°C to +60°C |
| Storage Humidity | Up to 93% RH (non condensing) |
| Certified to | EN 14604:2005+AC:2008 |
| Weight | 138 g |
| Leisure Accommodation Vehicles | Yes |
What should I do if my smoke alarm sounds?
In the event of a smoke alarm sounding:
About Us
We pride ourselves on product reliability and quality. Since 1998, we’ve deployed over 80 million safety products, protecting over 25 million homes nationwide.
Sustainability
We’re committed to reducing our impact on the planet; that’s why we've reduced the plastic in our packaging and have unique products that use less energy.
The FireAngel range
In addition to our smoke alarms for the home, we offer a wide range of other safety products designed to protect you and your family. Choose from smart and wireless devices, as well as standard fire, carbon monoxide (CO), and heat alarms.
| Customer Reviews | 4.5 out of 5 stars 13,981 | 4.4 out of 5 stars 1,198 | 4.3 out of 5 stars 12,692 | 4.5 out of 5 stars 2,083 | 4.1 out of 5 stars 630 | 3.8 out of 5 stars 130 |
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| Price | £7.44£7.44 | £11.99£11.99 | £12.98£12.98 | £18.99£18.99 | £47.99£47.99 | £63.99£63.99 |
| Power | 1-year replaceable battery | 5-year replaceable batteries | 10 year sealed for life lithium battery | 230 V mains-powered smoke alarm with 9 V battery backup | 10-year sealed-for-life Panasonic lithium battery | 230V mains powered with 10 year lithium battery back-up |
| 10-year smoke alarm | no data | ✓ | ✓ | no data | ✓ | ✓ |
| Thermoptek optical smoke sensor | no data | no data | no data | no data | Thermoptek Thermally Enhanced Optical | Thermoptek Thermally enhanced optical |
| Optical sensor | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Detects carbon monoxide | no data | no data | no data | no data | Option to interconnect with CO FP1820W2-R | Option to interconnect with CO FP1820W2-R |
| Low battery warning | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Certified to BS EN14604:2005 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| 85dB at 3 metres | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Toast proof - Reduces false alarms | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Wireless interconnect provision with other alarms | no data | no data | no data | no data | Pro Connected | Pro Connected |