Ei660i Multi-Sensor Fire Alarm Battery Powered Optical Heat

The Ei660i is a battery-powered multi-sensor fire alarm designed to protect your home from both fast-spreading flaming fires and slow-burning smouldering fires. Unlike single-sensor detectors that rely on one type of detection, this alarm combines two complementary sensing technologies—optical and heat—working intelligently together to deliver complete fire coverage.

How Dual-Sensor Protection Works

The optical sensor excels at detecting visible smoke from slow-burning fires, the type most likely to occur while you're sleeping or unaware. Meanwhile, the heat sensor responds to rapid temperature increases characteristic of fast-flaming fires. By actively monitoring both sensors simultaneously, the intelligent software allows them to work as a unified system, catching fires earlier than either sensor alone could manage. This also significantly reduces false alarms—a major frustration with single-sensor detectors.

Battery Power That Actually Lasts

The Ei660i contains a sealed lithium battery engineered to power the alarm for its full 10-year lifespan. No battery replacements, no hunting for spares, no guesswork about when the batteries will die. This set-and-forget design is ideal for homeowners who want reliable protection without ongoing maintenance concerns.

Where It Works Best

This alarm is purpose-built for the rooms where most home fires happen and where dual-detection makes the biggest difference: bedrooms, living rooms, hallways, landings, and loft spaces. Its compact 11.5cm diameter fits easily on any ceiling without looking obtrusive. The multi-sensor approach eliminates the need to choose different alarm types for different rooms—one intelligent device handles it all.

Smart Dust Compensation

Dust buildup is a common reason alarms become less effective or trigger false alarms. The Ei660i features self-monitoring dust compensation technology that continuously tracks dust accumulation in the optical chamber and automatically recalibrates the trigger point. This means the alarm tolerates more dust than conventional detectors while maintaining reliable sensitivity when it matters most.

Real-Time Monitoring with AudioLINK+

The included AudioLINK+ app technology gives you simple access to real-time data about your alarm's status, recent testing records, and activation history. If issues arise, you'll get colour-coded reports highlighting sensor status and system health—helping you verify your home is properly protected.

Why Multi-Sensor Beats Single-Sensor

Fire safety experts recommend multi-sensor alarms for everyday living spaces because they respond faster to all fire types while minimizing false activations. The Ei660i removes the guesswork about which alarm type to buy for which room. It's designed specifically for domestic fire protection in spaces where people spend time, sleep, and gather—the places where early warning matters most.