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Learn more by watching our Legrand 643088 | Wired Photoelectric Smoke Alarm Surface Mount | 10YR Lithium Backup video.
The Legrand 643088 is a surface-mounted, mains-powered smoke alarm featuring a photoelectric sensor and a built-in 10-year lithium battery backup for continued protection during power loss. Designed for homes, rentals, or renovations, it supports both hardwired and wireless interconnect (up to 20 units), enabling system-wide alerts without running additional cabling.
Built to resist false alarms, it includes sealed mesh protection over the sensor chamber and is tested to endure heat and humidity. A large test/hush button, LED indicators, and UV-resistant housing offer user-friendly operation and long-term durability.
Q: Can I wire this smoke alarm in with others and also use wireless linking?
A: Yes, it supports both wired and RF wireless interconnect.
Q: Does the battery need replacing?
A: No, the battery is sealed and lasts 10 years—the life of the unit.
Q: How many alarms can I interconnect wirelessly?
A: Up to 20 compatible Legrand alarms can be wirelessly linked.
(643088)
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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 |
|---|---|
| Cat. No. | 643088 |
| 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 and wireless (up to 20 interconnected alarms) |
| Radio Frequency | 434.2 MHz (no internet required) |
| Battery Type | Non-replaceable 10-year lithium (backup) |
| Product Size | Ø 148 × 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 | 643088 |
| Model # | 643088 |
| Barcode # | 9321001511458 |
| 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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