Personal Alarm - These handheld piezo screamers are also known as rape alarms. They are a very loud siren. schematic diagram | Security circuits

Personal Alarm - These handheld piezo screamers are also known as rape alarms. They are a very loud siren.

For view click Personal Alarm - These handheld piezo screamers are also known as rape alarms. They are a very loud siren. schematic diagram