What Is An Alarm

An alarm is an electronic product that reminds or warns us that we should take certain actions in the form of sound, light, air pressure, etc. in order to prevent or prevent the consequences of an event. Alarms are divided into mechanical alarms and electronic alarms. With the advancement of science and technology, mechanical alarms are increasingly being replaced by advanced electronic alarms, which are often used in system failures, safety precautions, transportation, medical rescue, emergency disaster relief, induction detection and other fields. indivisible. Such as: door magnetic sensor and gas sensor alarm.