E2S Warning Signals Impress House, Mansell Road, Acton, London W3 7QH Sheet 4 of 4 e2s.com D221
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351
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IS Issue 5 25/09/2023
S1
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LED Flash Mode Settings (AC & DC)
The Flash Mode Dip Switch can be changed to set the desired
flash pattern
Flash Mode DIP Switch –
Shown with 1
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OFF, 2
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ON, 3
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OFF (0 1 0),
This denotes Flash mode 1Hz. For further flash modes refer to
table:
Switch
Setting
Flash Mode
0 0 0
Steady on
1 0 0
Blinking
0 1 0
Flashing 1Hz
*
1 1 0
Flashing 1.5Hz
*
0 0 1
Flashing
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Double Strike
1 0 1
Flashing
-
Triple Strike
0 1 1
Flashing 2Hz
*
1 1 1
Flashing
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Temporal
1 2 3
ON
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All models are approved for use as Audible Signal and Visual Appliance
for use as General Signaling: UL464A & CSA C22.2 No 205
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17
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Type 4 / 4X / 3R / 13, IP66
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40°C to +66°C /
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40°C to +151°F
General Signaling Canada:
AL121NHDC:
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40°C to +55°C /
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40°F to +131°F
AL121NHAC:
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40°C to +40°C /
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40°F to +104°F
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To maintain Ingress Protection, cable entries must be fitted with suitably rated cable glands or stopping plugs
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EOL Monitoring (DC Only): End of Line Devices may be fitted between the +ve &
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ve terminals of the PCBA (See diagram below). Please
ensure that the device legs meet the wire size range stated for the connection terminals and are fitted correctly in order to avoid a short.
Refer to the compatible control panel specification for EOL device values and ratings
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All DC Units have a blocked diode fitted in their supply input lines which allows reverse polarity monitoring.
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Note that the maximum forward polarity monitoring voltage is 6V. A monitoring voltage greater than 6V may activate the alarm horn sounder
and the 2nd, 3rd or 4th stages.
Model
Nominal
Voltage
Voltage Range
Max Operating RMS
#
Nominal Operating Current*
Beacon
Sounder
P2 / P3
Beacon
Sounder
P2 / P3
AL121HDC024
12V dc
11.5
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14Vdc
79.5mA
376mA / 440mA
168mA
430mA / 930mA
24V dc
16
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33 Vdc
(Regulated)
87mA
430mA / 930mA
183mA
AL121HDC048
48V dc
48
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54 Vdc
60mA
223mA / 453mA
115mA
AL121HAC230
115 Vac
100
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240 Vac
50/60Hz
34mA
173mA / 340mA
166mA
181mA / 383mA
230 Vac
19mA
105mA / 212mA
*Nominal Voltage, 1Hz Flash Pattern / Tone 12;
#
Worst
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case input voltage and worst case flash pattern
