6.8Automatic Self-Test

The smoke chamber automatically tests itself every 40 sec- onds. If the chamber is degraded it will beep without the red light flashing at the same time. If this happens clean the unit. If the beeping persists and the beep does not coincide with an red light flash, return the unit for service (see Getting your Smoke Alarm Serviced ).

6.9Dust & Insect Contamination

All Smoke Alarms and particularly the optical (photoelectric) type are prone to dust and insect ingress which can cause false alarms.

The latest design, materials and manufacturing techniques have been used in the construction of our Alarms to minimise the effects of contamination. However it is impossible to com- pletely eliminate the effect of dust and insect contamination, and therefore, to prolong the life of the Smoke Alarm you must ensure that it is kept clean so that excess dust does not build up. Any insects or cobwebs in the vicinity of the Smoke Alarm should be promptly removed.

In certain circumstances even with regular cleaning, contam- ination can build up in the smoke sensing chamber causing the alarm to sound. If this happens the alarm must be returned to us for servicing or replacement. Contamination is beyond our control, it is totally unpredictable and is consid- ered normal wear and tear. For this reason, contamination is not covered by the guarantee and a charge is made for all servicing work.

If you experience persistent false alarms, in particular loca- tions, due to contamination of the smoke chamber you could consider fitting an ionisation type Smoke Alarm. The principle of ionisation detection makes it less vulnerable to the effects of dust or insect contamination.

6.10Replacing the Battery (Model Ei 405 & Ei405C only)

A fresh Alkaline Battery should last for over a year. When the battery power is low and replacement is necessary, the Alarm will beep and the red light will flash at the same time about once per minute for at least 30 days. The battery must then be replaced. Replace the battery if the alarm does not sound when the Test Button is pressed. For maximum reliability, replace the battery at least once a year (see fig 1a for how to remove unit from the mounting plate).

6.11End of life

The entire Smoke Alarm must be replaced if:-

(i)The unit is installed for over 10 years (check the replace- ment year marked on the unit).

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Ei Electronics Ei 405TY Automatic Self-Test, Dust & Insect Contamination, Replacing the Battery Model Ei 405 & Ei405C only
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Ei 405C, Ei 405TYC, Ei 405TY specifications

Ei Electronics has established itself as a leading brand in the field of smoke alarms and carbon monoxide detectors. Among its impressive lineup, the Ei 405TY, Ei 405TYC, and Ei 405C models stand out for their innovative design and advanced technologies, ensuring safety in residential and commercial environments.

The Ei 405TY model is a premium smoke alarm that utilizes a state-of-the-art optical sensing technology. This technology enhances the alarm's ability to detect slow-burning fires, such as those caused by smoldering materials. One of the primary features of the Ei 405TY is its high-performance photoelectric chamber, which minimizes false alarms while maximizing fire detection reliability. It is equipped with an intelligent feature that allows for a resettable alarm, providing peace of mind in everyday situations. The alarm also produces a clear, loud alert, ensuring that occupants are promptly notified in case of danger.

The Ei 405TYC model builds upon the features of the Ei 405TY but adds a significant layer of versatility with its built-in carbon monoxide detection capability. This dual-functionality allows for comprehensive protection against both smoke and carbon monoxide, a colorless and odorless gas that poses serious health risks. The Ei 405TYC incorporates advanced microcontroller technology, which ensures accurate detection and notifications for varying levels of CO concentration. Additionally, it features a visual indicator that provides information about the alarm's operational status, enhancing its user-friendliness.

The Ei 405C model is designed for those seeking a reliable and straightforward smoke detection solution. It employs the same optical sensing technology found in the Ei 405TY but without the carbon monoxide detection feature. This model excels in smaller spaces, where it serves effectively as a dedicated smoke alarm. Its easy installation and maintenance are supported by a user-friendly design, making it an ideal choice for homeowners or property managers looking for a cost-effective safety solution.

All three models are designed with long-lasting battery life, ensuring they remain functional even during power outages. Additionally, they feature a tamper-proof design to prevent accidental removal. The Ei Electronics alarms are compliant with international safety standards, emphasizing the brand's commitment to quality and reliability in personal safety. Overall, the Ei 405TY, Ei 405TYC, and Ei 405C models represent a blend of advanced technology and practical features, providing essential fire and carbon monoxide detection for peace of mind in any environment.
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