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Learn more by watching our Legrand 643090 | Wired 240V Photoelectric Smoke Alarm Surface Mount | 10YR Backup video.
The Legrand 643090 is a surface-mounted, hardwired photoelectric smoke alarm built for reliable detection of smouldering fires. It runs on 230–240V AC and includes a sealed 10-year lithium backup battery, ensuring continuous protection even during power outages. Ideal for home safety setups, it allows wired interconnection of up to 20 compatible units for full-system alerts.
Designed for long-term performance, it features LED indicators for power, alarm, and battery, a large central test/hush button, and a sealed mesh to reduce false alarms from insects or dust. Its white, UV-resistant casing resists yellowing—keeping it looking clean for years.
Manufactured April 2024 or LATER.
Q: Does this alarm work during a power cut?
A: Yes, the built-in 10-year battery provides backup during outages.
Q: Can this be wired with other alarms?
A: Yes, it supports interconnection with up to 20 compatible units.
Q: What’s the mounting method?
A: It’s made for surface mounting on ceilings or walls with screws.
(643090)
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Warranty starts from Invoice Date
Domestic Use: 5 Year
Commercial Use: 5 Year
Warranty Method: Return to Sparky Direct
| Specification | Details |
|---|---|
| Catalogue Number | 643090 |
| Colour | White |
| Supply Voltage | 230–240 V ~ 50 Hz |
| Power Source | Mains powered |
| Sensor Type | Photoelectric |
| Mounting Type | Surface (ceiling or wall) - screws |
| Interconnect Type | Wired (up to 20 interconnected smoke alarms) |
| Battery Type | Non-replaceable 10 year lithium battery (backup) |
| Product Size | Ø 148 x 55 mm |
| Temperature Range | 0°C to +40°C |
| Humidity Range | 10–95% at 20°C (non-condensing) |
| Alarm Volume | > 85 dBA at 3 metres |
| Recommended Lifespan | 10 Years |
| Alarm Pattern | ISO 8201 |
| Quality System | ISO 9001 |
These specifications and characteristics outline physical, mechanical, electrical details.
| Brand | Legrand |
| SKU | 643090 |
| Model # | 643090 |
| Barcode # | 9321001511472 |
| Package Weight | 0.407kg |
| Package Width | 0.070m |
| Package Height | 0.155m |
| Package Length | 0.155m |
| TYPE | VALUE |
|---|---|
| Type | Smoke Alarm |
| Brand | Legrand |
| Colour | White |
| Installation Area | Indoor |
| Battery Type | Non-replaceable 10 year lithium battery |
| Supply | 230-240 V ~ 50 Hz |
| Mount Type | Surface Mount |
| Interconnect Type | Wired/Wireless |
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