Smoke detector ei electronics EI650 — optical photoelectric, 10-year sealed battery, pack of 3

The ei electronics EI650 is an optical (photoelectric) smoke detector supplied as a pack of three and equipped with sealed 10‑year batteries. Designed to detect smouldering fires early, this detector is suitable for mounting on ceilings or walls in homes, apartments and small business premises. The unit includes a test/reset button and an LED status indicator to confirm operation and simplify maintenance while the sealed battery design reduces the need for periodic battery replacement.

Advantages

The photoelectric sensing chamber responds reliably to slow, smouldering combustion and stray smoke particles, improving early warning for these fire types compared with ionisation-only detectors. A sealed 10‑year battery provides long-life power without regular battery changes, and the included test/reset button enables user-initiated checks of detector function. The compact design allows flexible mounting on ceilings or walls, and the LED indicator provides clear visual status for quick verification.

Suitable for

• Bedrooms and living areas in residential properties
• Hallways and landings where early detection of smouldering fire is required
• Small offices and commercial spaces with low to moderate ambient smoke sources

Key specifications

• Detection principle: Optical (photoelectric) smoke sensing
• Power source: Sealed long-life battery rated for 10 years
• Form factor: Ceiling or wall mountable smoke detector
• Indicators and controls: Test/reset button and LED status indicator
• Pack contents: Supplied as a set of three detectors

How to use

Install each EI650 detector on a suitable ceiling or high wall location following local regulations and the manufacturer’s mounting guidance. Use the included mounting base to secure the detector, then attach the detector body. After installation, press the test/reset button to verify operation; the LED indicator will show status. Maintain a clear area around the detector, avoid painting or covering the sensing chamber, and follow local codes for placement distances from kitchens, bathrooms and ventilation. Replace detectors according to the device’s end‑of‑life indication or after the 10‑year battery lifespan has elapsed.

Usage recommendations

Locate detectors in principal sleeping areas, corridors serving bedrooms and on each storey of a dwelling for effective coverage. Do not place detectors too close to cooking appliances or bathrooms to avoid nuisance alarms; if nuisance alarms occur, review positioning and consider complementary devices for these zones. Test detectors monthly and clean dust from the outer casing periodically using a soft brush or vacuum with a soft nozzle. Follow all local fire safety regulations for detector placement and maintenance.