Buzzer Continuous

Buzzer Continuous refers to a buzzer that emits a steady, non-stop sound when powered or triggered. It’s commonly used in alarms, notifications, or warning systems. 

Types of Buzzers:

1. Active Buzzer (Continuous Sound)
   • Built-in oscillator
   • Sounds as soon as powered (just apply 5V)
   • Perfect for simple alerts
2. Passive Buzzer (Needs signal to oscillate)

   • Controlled via PWM or tone() function

   • Can play different tones or melodies

     Use Cases:

   • Alarms (fire, security)

   • Timers

   • Low battery or error warnings

   • Entry/exit beeps