How does a car alarm relay works?

A car alarm relay functions as an intermediary switch that activates specific components of the alarm system. When the alarm is triggered, the relay receives a signal from the alarm control unit and closes the circuit, allowing power to flow to components such as sirens, lights, or immobilizers. This activation typically results in audible alerts or visual signals to deter potential theft or unauthorized access. The relay's ability to handle higher currents also protects the alarm system from damage due to electrical overload.