Aico Ei650i Battery Powered Optical Fire Alarm Detector

Optical smoke detection is better suited to the more dense smoke produced in smouldering materials, making the Aico Ei650i an excellent choice for protecting your home from fires that develop slowly and silently. Unlike ionization detectors that focus on fast-flaming fires, photoelectric smoke alarms are generally more responsive to fires that begin with a long period of smoldering—the type most likely to occur on upholstered furniture or from electrical faults.

The Ei650i features a tamperproof lithium battery with a 10 year life, meaning you install it once and enjoy a decade of reliable protection without the hassle of battery changes. The alarm is not powered until it is twisted on the mounting base, thus avoiding battery power consumption during storage and prior to installation—a thoughtful design that ensures maximum battery longevity when it matters.

Ideal placement throughout your home. The Ei650i is best for detecting slow, smouldering fires commonly produced by electrical fires or sofas and is less likely to react to cooking smells if fitted in the hallway next to the kitchen. This makes it far less prone to nuisance alarms than older technologies, so your family won't be repeatedly woken by false alerts from cooking or steam.

Simple installation, powerful peace of mind. With its compact 11.5cm diameter design and easy twist-on mounting base, the Ei650i requires no wiring or complex setup. The alarm uses intelligent light receptors to activate when it detects smoke, delivering consistently reliable detection across all common domestic fire scenarios. The built-in 85dB sounder ensures everyone in your home can hear the alarm, while the test button lets you verify function regularly.

Smart detection technology. The high-performance optical chamber in the Ei650i continuously monitors the air around it. Ionisation detectors are more prone to give rise to a false alarm than their optical counterparts, so you get dependable alerts when they actually matter—not when someone's making toast. For homes where occupants sleep, the optical technology provides critical early warning precisely when you're most vulnerable.

A standalone unit that works immediately out of the box, the Aico Ei650i delivers the specific type of fire detection UK homes need most, combined with the long-lasting convenience and reliability that Aico is known for. Install it in hallways, bedrooms, living rooms, and dining areas for comprehensive household protection.