Table 2: Candela at Various Angles
Candela at Various AnglesPer UL 1638
Model Rated
Candela
A1
A2
A3
A4
A5 A6/A7
MT4-115-WH
15.0cd
15.0 18.0 14.6 17.7 8.4 0.8
A5
A7
A4
A3
A6
A1
A2
Table 3: dBA and Current Ratings for Multitone (Audible Only)
Tone
Maximum RMS
Current
(AMPS)
Reverberant dBA
At 10 Feet Per UL 464
HI
STD
HI
STD
Horn 0.050
0.042
85
82
Bell 0.041
0.039
82
75
March Time Horn
0.050
0.040
85
79
Code-3 Horn
0.050
0.042
82
75
Code-3 Tone
0.042
0.040
79
73
Slow Whoop
0.050
0.042
85
79
Siren 0.045
0.041
85
79
HI/LO 0.042
0.039
82
75
GENERAL NOTE:
If the strobe and audible are wired to operate in unison on a single circuit, add strobe current from Table 1 to audible signal current
from Table 3 to obtain total current for each unit.
WARNING: IF MULTITONE STROBE SIGNALS ARE OPERATED WITHIN 15 INCHES OF A PERSON'S EAR, THEY CAN
PRODUCE A SOUND PRESSURE LEVEL THAT EXCEEDS THE MAXIMUM 120 dBA PERMITTED BY ADA AND OSHA RULES.
EXPOSURE TO SUCH SOUND LEVELS CAN RESULT IN DAMAGE TO A PERSON'S HEARING.
WARNING: MAKE SURE THAT THE TOTAL RMS CURRENT REQUIRED BY ALL APPLIANCES THAT ARE CONNECTED
TO THE SYSTEM’S PRIMARY AND SECONDARY POWER SOURCES DO NOT EXCEED THE POWER SOURCES’ RATED
CAPACITY OR THE CURRENT RATINGS OF ANY FUSES ON THE CIRCUITS TO WHICH THESE APPLIANCES ARE WIRED.
OVERLOADING POWER SOURCES OR EXCEEDING FUSE RATINGS COULD RESULT IN LOSS OF POWER AND FAILURE TO
ALERT OCCUPANTS DURING AN EMERGENCY, WHICH COULD RESULT IN PROPERTY DAMAGE AND SERIOUS INJURY OR
DEATH TO YOU AND/OR OTHERS.
When calculating the total currents: Use Table 1 and 3 to determine the highest value of “RMS Current” for an individual strobe
(across the expected operating voltage range of the strobe), then multiply these values by the total number of strobes; be sure to add
the currents for any other appliances, including audible signaling appliances, powered by the same source and include any required
safety factors.
WARNING: MAKE SURE THAT ALL FUSES USED ON SIGNALING CIRCUITS ARE RATED TO HANDLE THE MAXIMUM
INRUSH OR PEAK CURRENT FROM ALL DEVICES ON THOSE CIURCUITS. FAILURE TO DO THIS MAY RESULT IN LOSS OF
POWER TO THE SIGNALING CIRCUIT AND THE FAILURE OF ALL DEVICES ON THAT CIRCUIT TO OPERATE, WHICH
COULD RESULT IN PROPERTY DAMAGE AND SERIOUS INJURY OR DEATH TO YOU AND/OR OTHERS.
The Multitone audible signals produce a brief inrush current that lasts for just 50 microseconds but can reach a peak value of 5.0
Amps.
P83160 C
Sheet 2 of 6
