S1224MC Datasheet, PDF (3/4 Pages) Systemsensor advanced ideas. – Selectable Output Strobe and Horn Strobes

Table 1-A: SpectrAlert Strobe UL Max. Current Draw
Candela
Setting
FWR Operating
Current–Strobe
(mA RMS)
8-17.5V
16-33V
DC Operating
Current–Strobe
(mA RMS)
8-17.5V
16-33V
15
112
64
127
59
15/75
135
74
127
69
30
93
90
75
158
160
110
208
209
Table 1-B: Horn UL Max. Current Draw Measurements (mA RMS)
Explanation of Published Voltage, Current, and SPL
Specifications
In May 2004 Underwriters Laboratories changed standard
UL 1971 to require that operating current measuremments
are made using RMS (root mean square) instead of peak
or average values. RMS measurements more accurately
predict the power consumption of a device since they take
into account the entire current draw profile including surge,
repetitive surge, and peak values. The published RMS cur-
rent is the maximum operating current of that device within
its operating voltage range. This current maximum may or
may not occur at the endpoints of the voltage range.
Selectable Horn Tones
Temporal Low
Volume
Electromechanical
3000 Hz Interrupted
High
Volume
Electromechanical
3000 Hz Interrupted
Non-
Low
Temporal Volume
Electromechanical
3000 Hz Interrupted
High
Volume
Electromechanical
3000 Hz Interrupted
DC
8-17.5V 16-33V
15
23
15
33
36
53
43
57
16
37
16
32
38
49
44
56
FWR
8-17.5V 16-33V
13
23
13
23
20
44
21
40
19
29
18
33
46
49
42
58
Table 1-C: 12VDC Horn/Strobe UL Max. Current Draw
Measurements (mA RMS)
Temporal
Low Volume
High Volume
Candela
Setting
Electromechanical 3000 Hz Electromechanical 3000 Hz
15
111
111
112
112
15/75
127
127
126
129
Non-Temporal
15
113
112
114
115
15/75
128
128
130
134
Similarly, UL tests the audibility of devices in accordance
with UL 464 by measuring them across the operating volt-
age range to determine the minimum sound pressure level
produced at any particular setting.
During May 2004, UL also changed the way they list the
voltage range of a device. All 12V products will be listed
between 8 – 17.5V and all 24V products will be listed
between 16 – 33V. Those devices are considered “regulat-
ed”. Any product that does not operate within these ranges
will be listed as a “special application” with its operating
voltage specified on the device.
Notes
1. Current draw for strobe-only products is shown in Table 1-A.
2. Current draw for horn-only products is shown in Table 1-B.
3. 12VDC 2-wire horn/strobe current is shown in Table 1-C.
4. 24VDC 2-wire horn/strobe current draw is shown in Table
1-D.
5. Current draw for other horn/strobe power supplies can be
calculated by adding the strobe current in Table 1-A to the
horn current in Table 1-B from the chosen settings.
Table 1-D: 24VDC Horn/Strobe UL Max. Current Draw
Measurements (mA RMS)
Candela
Setting
15
15/75
30
75
110
15
15/75
30
75
110
Low Volume
Temporal
High Volume
Electromechanical 3000 Hz Electromechanical 3000 Hz
71
70
73
75
86
85
87
88
99
98
100
100
166
166
167
170
209
209
210
213
Non-Temporal
74
74
79
82
86
88
93
96
101
101
107
110
167
167
173
176
213
213
218
222
SpectrAlert Strobe Candela Selections
For strobe candela selection, adjust slide switch located on the
rear of the product while watching the viewing window on the
side of the reflector.
Viewing Window
A0133-00
Permissible Candela Settings
Candela
Setting
Operating Voltage
12V
24V
15
OK
OK
15/75
OK
OK
30
OK
75
OK
110
OK