Brand Alecto The Alecto SD530 offers fast smoke detection and clear alerting. When smoke is present, an 85 dB alarm sounds. The photoelectric sensor reacts quickly and accurately. The sensor has a 10-year lifespan. The replaceable 9V battery lasts up to 5 years.Fast warningThe photoelectric sensor detects visible smoke early and reacts without delay. It also responds in time to slow smouldering fires. The 85 dB sound level is clearly audible through closed doors and will wake you at night. On
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| Merchant | Price | Shipping | Total | Rating |
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| Boxed2me· new | £29.39 | Free | £29.39 | — |
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