P1224MC SYSTEMSENSOR [Systemsensor advanced ideas.], P1224MC Datasheet - Page 3

• Manufacturer Part Number: P1224MC
• Description: Selectable Output Strobe and Horn Strobes
• Manufacturer: SYSTEMSENSOR [Systemsensor advanced ideas.]

Table 1-A: SpectrAlert Strobe UL Max. Current Draw
Table 1-B: Horn UL Max. Current Draw Measurements (mA RMS)
Table 1-C: 12VDC Horn/Strobe UL Max. Current Draw
Measurements (mA RMS)
Table 1-D: 24VDC Horn/Strobe UL Max. Current Draw
Measurements (mA RMS)
Candela
Setting
15
15/75
30
75
110
Temporal
Non-
Temporal
Candela
Candela
Setting
Setting
15/75
15/75
15/75
15/75
110
110
Selectable Horn Tones
15
30
75
15
30
75
15
15
Low
Volume
High
Volume
Low
Volume
High
Volume
Electromechanical
Electromechanical
166
209
101
167
213
8-17.5V
Electromechanical
3000 Hz Interrupted
Electromechanical
3000 Hz Interrupted
Electromechanical
3000 Hz Interrupted
Electromechanical
3000 Hz Interrupted
111
127
113
128
71
86
99
74
86
Low Volume
Low Volume
112
135
FWR Operating
Current–Strobe
(mA RMS)
3000 Hz
3000 Hz
16-33V
166
209
101
167
213
111
127
112
128
70
85
98
74
88
158
208
Non-Temporal
Non-Temporal
64
74
93
Temporal
Temporal
8-17.5V
15
15
36
43
16
16
38
44
Electromechanical
Electromechanical
DC
8-17.5V
16-33V
127
127
100
167
210
107
173
218
23
33
53
57
37
32
49
56
112
126
114
130
73
87
79
93
Current–Strobe
High Volume
High Volume
DC Operating
(mA RMS)
8-17.5V
13
13
20
21
19
18
46
42
16-33V
FWR
3000 Hz
160
209
3000 Hz
59
69
90
100
170
213
110
176
222
16-33V
112
129
115
134
75
88
82
96
23
23
44
40
29
33
49
58
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.
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. C urrent draw for strobe-only products is shown in Table 1-A.
2. C urrent draw for horn-only products is shown in Table 1-B.
3. 1 2VDC 2-wire horn/strobe current is shown in Table 1-C.
4. 2 4VDC 2-wire horn/strobe current draw is shown in Table
5. C urrent draw for other horn/strobe power supplies can be
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
1-D.
calculated by adding the strobe current in Table 1-A to the
horn current in Table 1-B from the chosen settings.
A0133-00
Permissible Candela Settings
15
15/75
30
75
110
Candela
Setting
Operating Voltage
12V
OK
OK
24V
OK
OK
OK
OK
OK