subject: Three Main Types Of Self-Defense [print this page] Using the personal alarm is an inactive way to do your self-defense. It is in fact a small; machine, which produces loud sound to frighten the assailant while the earsplitting noise may grab the attention of people around you. You can find several types of personal alarms that you can use for your self-defense in the alarming situation. You can either use them as key chains or hang on your mobile phone. You just need to press the button of the alarm when you feel any kind of danger and we hope it will scare your predator straightaway and he might run away immediately after hearing the strong sound.
