A panic alarm is an electronic device that can easily be activated to request help during an emergency situation where danger to persons or property exists. It is designed to minimize time until assistance can arrive.

A panic alarm is frequently but not always controlled by a concealed panic alarm button. These buttons can be connected to a monitoring center or locally via a silent alarm or an audible bell/siren. The alarm can be used to request emergency assistance from local security, police or emergency services. Some systems can also activate closed-circuit television to record or assess the event.

Many panic alarm buttons lock on when pressed, and require a key to reset them. Others may have a short delay during which time the request of help can be cancelled.