P82467-007 C
Sheet 2 of 9
Table 2: Current Ratings for Multitone Audible Appliances
Rated Average Rated Average
Tone Tone Description Current (Amps) Current (Amps)
24VDC 12VDC
HI dBA STD dBA HI dBA STD dBA
Horn Broadband Horn (Continuous) 0.040 0.023 0.100 0.020
Bell 1560 Hz Modulated (0.07 Sec. ON/Repeat) 0.014 0.012 0.031 0.010
March Time Horn Horn (0.25 Sec. ON/0.25 Sec. OFF/Repeat) 0.040 0.023 0.100 0.020
Code-3 Horn Horn (ANSI S3.41 Temporal Pattern) 0.040 0.023 0.100 0.020
Code-3 Tone 500 Hz (ANSI S3.41 Temporal Pattern) 0.028 0.017 0.060 0.015
Slow Whoop 500-1200 Hz Sweep (4.0 Sec. ON/0.5 Sec. OFF/Repeat) 0.048 0.026 0.100 0.025
Siren 600-1200 Hz Sweep (1.0 Sec. ON/Repeat) 0.036 0.023 0.082 0.020
HI/LO 1000/800 Hz (0.25 Sec. ON/Alternate) 0.020 0.014 0.044 0.012
Add 25% more input current than shown in Table 2 when operating the unit at maximum input voltage.
Add strobe current from Table 1 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 @ 10' dBA @ 10' 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 75 dBA 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.
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