P82475 K
Sheet 2 of 9
WARNING: THESE APPLIANCES WERE TESTED TO THE OPERATING VOLTAGE LIMITS OF 20-31 VOLTS FOR 24V
MODELS AND 10.5-15.6 MODELS VOLTS FOR 12V MODELS USING FILTERED (DC) OR UNFILTERED FULL-WAVE RECTIFIED
(FWR). DO NOT APPLY 80% AND 110% OF THESE VOLTAGE VALUES FOR SYSTEM OPERATION.
Table 2: Current Ratings for Multitone Audible Appliances
Rated Average Current
12VDC 24VDC
Tone
Tone Description
HI dBA
STD dBA
HI dBA
STD dBA
Horn
Broadband
Horn
(Continuous)
0.100 0.020 0.040 0.023
Bell
1560 Hz Modulated (0.07 Sec.
ON/Repeat)
0.031 0.010 0.014 0.012
March Time Horn
Horn (0.25 Sec. ON/0.25 Sec. OFF/Repeat)
0.100 0.020 0.040 0.023
Code 3 Horn
Horn (ANSI S3.41 Temporal
Pattern)
0.100 0.020 0.040 0.023
Code 3 Tone
500 Hz (ANSI S3.41 Temporal
Pattern)
0.060 0.015 0.028 0.017
Slow Whoop
500-1200 Hz Sweep (4.0 Sec. ON/0.5 Sec. OFF/Repeat)
0.100 0.025 0.048 0.026
Siren
600-1200 Hz Sweep (1.0 Sec.
ON/Repeat)
0.082 0.020 0.036 0.023
HI/LO
1000/800 Hz (0.25 Sec. ON/Alternate)
0.044 0.012 0.020 0.014
Add 25% more input current than shown in Table 2 when operating the unit at maximum input voltage.
Add strobe current from Table 4 to audible appliance current from Table 2 to obtain total current for each unit, if the strobe and
audible are wired to operate in unison on a single circuit.
Table 3: dBA - Multitone With Strobe
Anechoic
Reverberant dBA at 10 Feet
dBA at 10 Feet
Per UL 464
Tone Nominal Minimum
Maximum
Voltage
Voltage
Voltage
HI
STD
HI
STD
HI
STD
Horn
99 93 85 79 88
82
Bell
92 87 79 75 82
75
March Time Horn
99
93
82
75
85
79
Code 3 Horn
99
93
79
75
82
75
Code 3 Tone
95
90
75
70*
79
73*
Slow
Whoop
99 94 82 75 85
79
Siren
98 93 82 75 85
79
HI/LO
93 88 79 75 82
75
Anechoic dBA is measured on-axis in a non-reflective (free field) test room using fast meter response. For peak dBA (measured with
peak meter response), add 5 dBA to anechoic values shown in Table 3. Reverberant dBA is a minimum UL rating based on sound
power measurements in a reverberant test room.
WARNING: MULTITONE STROBE MODELS SET ON "CODE 3 TONE" WITH STANDARD dBA DO NOT MEET THE 75 dBA
MINIMUM UL REVERBERANT SOUND LEVEL REQUIRED FOR PUBLIC MODE FIRE PROTECTION SERVICE (NOTED BY * IN
TABLE 3). MODELS WITH SETTINGS WHICH PRODUCE LESS THAN 75dBA MAY NOT BE HEARD. THIS SETTING IS
ACCEPTABLE ONLY FOR GENERAL SIGNALING (NON-FIRE ALARM) USE. USE THE "HIGH" dBA SETTING WITH THIS
TONE OR USE A DIFFERENT TONE FOR PUBLIC MODE SERVICE.
Table 4: Strobe Current Requirement (AMPS)
Voltage
Rated Average Current
Rated Peak Current
Rated Inrush Current
LS MS
LSM IS LS MS
LSM
IS LS MS
LSM
IS
10.5VDC
0.160 0.235 0.220 ------ 0.340 0.560 0.470 ------ 0.300 0.500 0.440 ------
12.0VDC
0.160 0.235 0.220 ------ 0.340 0.560 0.470 ------ 0.300 0.500 0.440 ------
15.6VDC
0.160 0.235 0.220 ------ 0.340 0.560 0.470 ------ 0.390 0.650 0.470 ------
10.5VDC
0.175 0.240 0.230 ------ 0.475 0.730 0.660 ------ 0.420 0.700 0.620 ------
12.0VDC
0.175 0.240 0.230 ------ 0.475 0.730 0.660 ------ 0.420 0.700 0.620 ------
15.6VDC
0.175 0.250 0.240 ------ 0.475 0.730 0.660 ------ 0.545 0.910 0.660 ------
20.0VDC
0.080 0.135 0.115 0.240 0.160 0.288 0.250 0.500 0.210 0.280 0.225 0.650
24.0VDC
0.080 0.135 0.115 0.225 0.190 0.296 0.260 0.450 0.250 0.280 0.270 0.660
31.0VDC
0.080 0.135 0.115 0.195 0.210 0.296 0.260 0.370 0.320 0.300 0.360 0.880
20.0VFWR
0.080 0.135 0.125 0.253 0.210 0.390 0.350 0.700 0.320 0.390 0.315 0.920
24.0VFWR
0.081 0.135 0.125 0.233 0.216 0.390 0.365 0.640 0.380 0.390 0.380 0.930
31.0VFWR
0.091 0.135 0.125 0.196 0.240 0.390 0.365 0.520 0.450 0.420 0.500 1.250
NOTE
: All
VFWR
voltages are measured with
DC
volt meter. Multiply
VFWR
voltage by 1.11 to convert to
VRMS
.
