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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 | 0.408kg |
| Package Width | 0.071m |
| Package Height | 0.154m |
| Package Length | 0.156m |
| 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 |
Electrical and HVAC products sold by Sparky Direct are intended for installation by licensed and appropriately qualified professionals in accordance with applicable Australian Standards and regulatory requirements. Customers are responsible for ensuring that any product purchased, including any related or associated components, is compatible and suitable for their intended installation and application.
Sparky Direct does not provide installation advice and does not assess product suitability for individual circumstances unless expressly confirmed in writing. Customers must confirm correct product selection, compatibility, compliance, and suitability with a licensed or appropriately qualified professional prior to purchase.
Tools sold by Sparky Direct must be used safely and in accordance with the manufacturer’s instructions. Customers are responsible for ensuring they have the necessary knowledge and competence to operate any tool purchased. If you are unsure how to safely or correctly use a tool, do not use it and seek guidance from the manufacturer or a suitably qualified professional.
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