How Many Decibels Does a Honeywell 702 Siren Output?

The 702 siren emits a 118 dB sound when provided 12 Volts DC. This is roughly equivalent to the noise level experienced on the front row of a rock concert. Decibel ratings are logarithmic, so each 10 dB increase in intensity doubles the noise level, meaning 40 dB is twice as loud as 30 dB.

Noise Source

Decibel Level


Jet take-off (25 meters)


Possible Eardrum Rupture

Aircraft Carrier Deck


Thunderclap, chain saw, Oxygen torch


Painful, 32 times as loud as 70 dB

Steel mill, Auto horn at 1 meter, Turbo-fan aircraft at takeoff power at 200 feet (118 dB),

Riveting machine (110 dB),

Live rock music (108 - 114 dB)

108 - 118

110 dB is the average human pain threshold. 120 dB is 16 times as loud as 70 dB

Jet take-off (at 305 meters), Use of outboard motor, power lawn mower, jackhammer,


8 times as loud as 70 dB, serious damage possible at 8 hours of exposure

Garbage disposal, Dishwasher, Average factory, Freight train (at 15 meters)


Twice as loud as 70 dB, damage possible at 8 hours of exposure

Passenger car at 65 mph at 25 feet, Freeway at 50 feet from pavement edge, Radio or TV, Vacuum cleaner


Our arbitrary base for comparison. Upper 70’s can be annoyingly loud for some

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