Ei Electronics Ei 261EN - Manual (Page 18)

Carefully line up the unit on the base and slide on.
Press the test/hush button for 10 seconds. The horn will sound.
CAUTION: Do not attempt to remove the Alarm without first releasing the tamper clip as shown in Figure 1.
(8) Connect the mains power to the alarm circuit. Check the green light is on.
The CO Alarm is now fully operational and will provide protection against a build up of Carbon
Monoxide gas, 70 seconds after it is connected to the mains supply.
(9) The unit may be tamperproofed further, by removing the knockout in the sidewall of the mounting plate
as shown in Figure 1. Insert the self tapping screw (3mm diameter, 12mm long) after the unit is on
the mounting plate.
INTERCONNECTING Ei ELECTRONICS CARBON MONOXIDE ALARMS
With interconnected alarms, when one unit detects CO all units alarm. All horns will sound but only units
detecting CO will flash their red lights.
A maximum of twelve Ei 261EN/261DEN CO Alarms may be interconnected along with an Ei 128C
module with relay (see technical specifications).
WARNING: Do not connect these Alarms to any other type of Ei Alarm, or to any other model
produced by another manufacturer, apart from those listed above. Doing this may damage the
Alarms and could result in a shock or fire hazard.
The interconnect wire (minimum 0.75mm 2 cable) must be treated as if it was live. It should be insulated
and sheathed.
A maximum of 250 metres (820 ft) of wire can be used (maximum resistance between detectors 50
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