If you read reviews of personal attack alarms, you will find that some people say that the alarms are not loud enough. The truth is that many people misunderstand what a personal alarm is designed to do. The primary purpose of these devices is not to attract attention, but to make the attacker stop what they are doing and run away.
How Loud Are Personal Alarms?
Most personal alarms are in the region of 110dB to 140dB. To put that in perspective, a power saw is 110dB at three feet away, and a jet engine is 140dB at 100 feet away. However, sound doesn’t travel too well through solid objects. That’s why shutting your windows will partially block at the sound of traffic in the street below. This simple fact applies to alarms as well. If you set one off, it won’t seem very loud if you are in the … Read More