P83601 F
Sheet 2 of 11
Table 2: dBA Sound Output for 24VDC
Description
Volume
Reverberant Per UL 464
Anechoic dBA
20VDC 24VDC 31VDC 20VDC 24VDC 31VDC
Low 79 82 82 88 90 92
Continuous
Horn
High 85 88 88 93 95 97
Low 75 75 75 88 90 92
Code
3
Horn High 79 82 82 93 95 97
Table 2A: dBA Sound Output for 12VDC
Description
Volume
Reverberant Per UL 464
Anechoic dBA
10.5VDC 12VDC 15.6VDC 10.5VDC 12VDC 15.6VDC
Low 73* 76 76 82 84 86
Continuous
Horn High 82 82 85 87 89 91
Low 67* 70* 70* 82 84 86
Code 3 Horn
High
76
76
79
87
89
91
WARNING: NS4 AUDIBLE APPLIANCES SET ON LOW dBA DO NOT MEET THE 75dBA MINIMUM UL
REVERBERANT SOUND LEVEL REQUIRED FOR PUBLIC MODE FIRE PROTECTION SERVICE (NOTED BY * IN
TABLE 1). THIS SETTING IS ACCEPTABLE ONLY FOR GENERAL SIGNALING (NON-FIRE ALARM) USE. USE
THE “HIGH” dBA SETTING WITH THIS TONE FOR PUBLIC MODE SERVICE.
NOTES:
1. Strobes will produce 1 flash per second over the listed voltage range.
2. 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 5dBA to anechoic values as shown in Table 2. Reverberant dBA is a minimum UL rating based
on sound pressure measurements in a reverberant test room.
3. All models are UL Listed for indoor use with a temperature range of +32oF to +120oF (0oC to +49oC) and maximum humidity of
85% RH.
Check the minimum and maximum output of the power supply and standby battery and subtract the voltage drop from the circuit
wiring resistance to determine the applied voltage to the signaling appliance.
WARNING: ALTHOUGH UL TESTING HAS VERIFIED THAT THESE PRODUCTS FUNCTION EVEN AT 80% OF
THEIR MINIMUM RATING AND 110% OF THEIR MAXIMUM RATING, WHEELOCK STRONGLY RECOMMENDS
THAT THE VOLTAGE APPLIED TO THESE PRODUCTS BE WITHIN THEIR RATED VOLTAGE RANGE. THE
APPLICATION OF IMPROPER VOLTAGE MAY RESULT IN DEGRADED OPERATION OR DAMAGE TO THESE
PRODUCTS, WHICH COULD RESULT IN PROPERTY DAMAGE AND SERIOUS INJURY OR DEATH TO YOU
AND/OR OTHERS.
