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SPECIFICATIONS
Supply Voltage: 10.5 to 30.0 Volts
(DC Only).
Standby Current: 7.5mA (max) @ 12V; 10.0mA (max) @ 24V.
Alarm Current: 58.0mA (max) @ 12V; 60.0mA (max) @ 24V.
Relay Contacts: 30 volts/1 amp resistive (normally open
and normally closed supplied). The unit is supplied with the
relay operating in continuous mode (i.e. relay is on while
unit is sensing smoke). To select pulse mode (relay turns on
for 5 seconds only at start of smoke sensing), set jumper S1
to "P" position.
The unit is also supplied with the relay in conventional, i.e.
no contact resistance, mode. If required, 22K ohm can be
connected in series with the C terminal and relay contact
and 68K ohm between C and NC screw terminals by setting
jumper S2 to "R" position.
Wiring: Wiring may be surface or recessed.
Cable: 4 core max resistance 20 ohms, provided specified
supply voltage is maintained at unit.
Test Button: Simulates the effect of fire and checks
electronics and horn.
Power-on Indicators:
- Continuous green light on mounting plate for panel power.
- Red LED flashes every 40 seconds.
Alarm output: Piezo horn 85dB (A) @ 3m.
o
o
Standby Temp: 0
C - 40
C.
Humidity: 10 - 90 % Relative HumidityInterconnect: Up to
20 units in total (Ei181, Ei184, Ei186 units only) can be
interconnected so that when one senses fire all alarm.
Relays switch on all units.
Alarm Indicator: Red LED flashes rapidly only on units
sensing fire.
Battery Back-Up: 9 Volt Alkaline Primary Battery will power
the unit in standby for over 1 year without external power. Will
power the unit for over 2 hours in alarm. Battery is monitored
for open circuit, short circuit and high impedance. The unit
will beep once a minute when it is starting to be depleted.
Ionisation Ei181
Sensor: Dual Ionisation Chamber.
Sensitivity: Complies with BS5446-1: 2000.
Source: 0.9 microcurie of Am 241.
Combined Test/Hush Button: Tests and then hushes unit
for 10 minutes. Automatically resets. Red LED flashes
every 10 seconds while in hush. At the end of the hush
period unit gives a double beep.
Airspeed: No false alarms up to 10 m/s (22mph).
Insect Screen: Prevents insects or debris entering the
chamber.
Dimensions: 145mm (d) X 55mm (h). Weight: 380 grams.
17
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