alarm cancel signal within that period. It switches the relay for 5 seconds with the switch in pulse mode.

Low Battery Indication: Red light flashes every 10 seconds. (The green light switches off when the red is on).

Size of System: : the recommended maximum number of Radiolink units should not exceed 12 i.e any combination of relays, smoke alarms and remote controls to a maximum of 12 in total. Contact the Technical Services Department at one of the addresses below for advice on systems requiring more than this.

Communication: All units will communicate with other uncoded devices (e.g. Smoke Alarms) as shipped. After a unit has been house coded it will only communicate with other units house coded at the same time. House coding is essen- tial to prevent false alarms from neighbouring systems.

Entering House Code Mode: Pressing and holding the House Code switch until the red light comes on puts the RadioLink Relay into House code mode.

House Code Mode: The RadioLink Relay transmits and receives specific Codes. The red light flashes once every 5 seconds (interupting the green light) for each unit’s code it memorises (including itself). Only 12 flashes can be counted in house code mode – so communication among more than 12 devices has to be done functionally with the test buttons etc.

Duration of House Code Mode: 15 minutes

Clearing House Codes: The house codes memorised can be deleted (i.e. the RadioLink Relay can be uncoded) by press- ing and holding the House Code switch on for about 6 sec- onds. The red light will come on and then flash slowly to Indicate the smoke alarm has been returned to the default Factory settings.

Aico Ltd.,

Mile End Business Park,

Maesbury Road, Oswestry,

Shropshire SY10 8NN, U.K.

Telephone: 0870 7584000

www.aico.co.uk

Ei Electronics,

Shannon Industrial Estate,

Shannon, Co. Clare, Ireland.

Telephone: +353 61 471277

www.eielectronics.com

© Ei Electronics 2004

P/N A15267 Rev 0

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Ei Electronics Ei428 instruction manual Duration of House Code Mode 15 minutes, Ei Electronics

Ei428 specifications

The Ei Electronics Ei428 smoke alarm is a cutting-edge device designed for dependable fire safety in both residential and commercial environments. Featuring advanced technologies and a commitment to quality, the Ei428 offers a wide range of features that enhance its functionality and reliability.

One of the standout characteristics of the Ei428 is its dual-sensor technology. It employs both ionization and photoelectric sensing mechanisms to detect smoke effectively. The ionization sensor is particularly responsive to fast-flaming fires, while the photoelectric sensor is adept at identifying smoldering fires. This combination significantly increases the chances of early detection, thereby providing crucial time for occupants to respond during an emergency.

The Ei428 also incorporates a unique sealed lithium battery, which ensures a long life of up to 10 years. This battery eliminates the hassle of frequent battery replacements and delivers peace of mind to users, knowing that the device will remain functional throughout its lifespan. In addition, the built-in battery is designed to be tamper-proof, further enhancing the device's reliability.

Another remarkable feature of the Ei428 is its intelligent technology, which includes a self-test function. This automated testing feature regularly checks the sensor's functionality and alerts users to any issues, ensuring that the device remains in optimal working condition at all times. The alarm is also equipped with a loud 85 dB sounder, which provides audible alerts to make sure that occupants are aware of any potential fire danger, even in noisy environments.

In terms of design, the Ei428 has a compact and unobtrusive profile, allowing it to blend seamlessly into various decors. Its user-friendly interface includes a large test button for easy access during routine checks, promoting adherence to safety standards. The alarm's visual indicators provide additional information regarding the unit’s status, further simplifying the user's experience.

Overall, the Ei Electronics Ei428 smoke alarm stands as a testament to modern fire safety technology. It combines dual-sensor detection, long-lasting power, intelligent self-testing capabilities, and user-friendly design to deliver exceptional performance. Whether installed in homes, offices, or other spaces, the Ei428 is a vital asset in safeguarding lives against the threat of fire.