Ei Professional Smoke Alarms and Smoke Detectors

Radio Frequency Alarms

Applications

The Ei420 is a RadioLINK alarm interface module is a versatile module, which can be a) hard-wired to an Ei260 Series CO alarm to allow it to be integrated into a RadioLINK system and b) used as a standalone RadioLINK repeater module.

The Ei420 has inputs for interconnect wiring and will send out a RadioLINK signal if it receives a hard-wired signal input. Additionally, if the Ei420 receives a RadioLINK signal it will output a hard-wired signal on the interconnect line. This application allows the integration of the CO detector into the versatile RadioLINK range of alarms.

The Ei420 can also be used as a stand-alone RadioLINK repeater module in installations that require additional signal coverage but where the installation of an additional alarm may not be suitable.

Main Features

Stand-alone unit designed for use with RadioLINK bases & accessories

Multiple Repeater RF signaling

Hard-wired input for Ei mains powered alarms (e.g. Ei260 Series CO alarms)

Cover to allow remote siting

Unique House-Coding

Visual RF transmission and power indicators

Mains powered with built-in rechargeable Lithium back-up

RF performance to EN 300220-3

EMC performance to EN 301489-3

5 year guarantee

Installation

For full Installation and Siting Instructions please refer to the Use and Care Manual

If purchasing the Ei420 as a RadioLINK interface with a CO alarm then it should be mounted close to the alarm. It can be mounted a short distance away or it can be mounted directly above the alarm. Choose a suitable mounting position near the mains supply but keep the Ei420 away from metal surfaces or large metal objects (e.g. water cylinder, fuse boards) which can reduce the RF signal range.

The function of a Repeater is to receive and then re-transmit the RF signals. This shortens signal paths throughout the installation to give improved RF signal reliability. If purchasing
the Ei420 for use as a Repeater it should be mounted in an intermediate position where the RadioLINK signal needs to be strengthened.

Disconnect the AC mains supply from the circuit that is going to be used.
Where the incoming wiring is on the surface of the wall/ceiling, the appropriately sized trunking / conduit must be chosen to mate with the unit. There is one suitable surface
cabling knockout. There is one rear entry knockout. Unscrew the cover attachment. Use a sharp knife to remove the material from the knockout, making sure that there is no gap when mated with trunking/conduit.

Screw the Ei420 to the wall or ceiling after first removing the required knockout and bringing the house wires through it.

Connect the wires to the appropriate terminals.

Activate the rechargeable cells by carefully and gently sliding the switch to the “on” position

Fit and screw the cover to the Ei420 using the two screws supplied.

Connect the mains power to the Ei420 module. Check the green light is on. If the green light changes to red every 10 seconds then switch off the mains power, remove the cover
and check that the battery slide switch is in the “on” position. Replace the cover and turn the mains power back on. If there is still a problem the rechargeable cells maybe depleted. Leave the unit on mains power for 2 hours to charge and check that the green light is now on continuously.

Press and hold the House Code switch through the hole in the cover using a small screwdriver, (see Figure 3) until the green light changes to red. Immediately release the switch and the light will flash red quickly. The green light will then flash red 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 House Code
timeout period expires).

Check that all the RadioLINK units communicate with each other by counting the number of times the light flashes on each unit in turn.

All the units will automatically exit the House Code Mode after 30 minutes. However, we recommend that you manually exit the House Code Mode by pressing and holding the House Code switch on until the House Code light turns on solidly. Immediately release the House Code switch. The light should stop flashing and an “Exit House Code” signal will be sent to all other Ei168RC and Ei420 units in the system.

Trouble Shooting

If, when checking the RadioLINK interconnection, some of the units do not respond

If using the Ei420 as an interface to an Ei260ENRC Series CO Alarm –
Ensure you have held the CO alarm test button down until the green light on the Ei420 has illuminated red twice, for 3.5 seconds each time (this could take up to 20 seconds).

If using the Ei420 as a Repeater
Check all Alarms and accessories respond correctly when button tested. Check that the green light on the Ei420 turns red for a few seconds when RF messages are being relayed.
Add another Ei420 as a Repeater.

Change the position of the flexible antenna by moving it outside the housing and changing it to a horizontal or vertical position. To do this, use a sharp knife and carefully
add a notch in the side to allow the antenna to be brought out.

Re-locate/rotate the units. Try rotating the unit or re-locating the unit (e.g. move it away from metal surfaces or wiring) as this can significantly improve signal reception.
Rotating and/or relocating the unit may move it out of the range of existing units even though it may have already been House Coded correctly in the system. It is therefore important to check that all alarms are communicating in their final installed positions. If units are rotated and/or resited, we recommend that all units are returned to the factory settings (press and hold the House Code switch on for about 6 seconds until the relevant light comes on and then flashes slowly). Immediately release the switch and the light should stop flashing. Then House Code all units again in their final positions as indicated above. The RadioLINK interconnection should then be re-checked. Check all Alarms and accessories respond correctly when button tested. Check that the green light on the Ei420 turns red for a few seconds when RF messages are being relayed.

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