Ei Electronics Ei428 specs

If momentary relay operation is required, carefully and gently slide the yellow switch to the “P” position with a small screw- driver (see figure 1b). This must be done before the mains power is connected or the rechargeable cells are activated.

7.Connect the rechargeable cells by carefully and gently slid- ing the switch to the “on” position See figure 1b.

8.Fit and screw the cover to the module pillars using the two screws supplied.

9.Connect the mains power to the Ei428 module. Check the green light is on. If a red light flashes every 10 seconds then switch off the mains power, remove the cover and check that the battery slide switch is in the “On” position (see figure 1b). Replace the cover and turn the mains power back on. If there is still a problem the rechargeable cells may be depleted, leave the unit on mains power for 2 hours to charge and test again.

10.Press and hold the House Code switch through the hole in the cover using a small screwdriver, see figure 1a, until the green light changes to red. Release the switch and the light will flash red quickly, a few times. The red light will then flash every 5 seconds (this is a dual colour light so the green light remains on when the red light is off and vice versa). Similarly, put all the other RadioLINK units in the property into House Code Mode (see relevant user instructions) within 15 minutes (before the timeout period expires).

11.Check that all the RadioLINK units have communicated with each other by counting the number of times the light flashes on each unit in turn (the light will flash red on the Ei428 relay modules, amber on the Ei168 bases and blue on the Ei405/405TY). For example, 3 units in the system should have 3 flashes every 5 seconds, 4 units should have 4 flash- es and so on (if there is a problem see section 3).

12.All the units will automatically exit the house code mode after 15 minutes. We recommend that you manually exit the house code mode by pressing and holding the house code switch, on all units, until the red/amber/blue light (depending on the unit) turns on. This reduces the risk of accidentally house coding your alarms and other components with nearby systems.

13.Check the RadioLINK communication by pressing the test/hush button for up to 60 seconds on each alarm. Ensure that the device connected to the relay contacts operates. After 60 seconds release the test button – check the device switches off. (If the continuous/pulse slide switch is in the pulse position, check the relay just switches on for 5 seconds and then switches off).

If an Ei410 is being used, (with the relay in continuous ‘C’ on mode), check that pressing the test button causes the relay to switch and that releasing the test button causes the relay to switch back.

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.