12V Active Buzzer – Loud Sound Alarm Module for Security and Alert Systems The 12V Active Buzzer is a powerful and self-driven sound-emitting device that generates a continuous tone when powered with 12V DC. Unlike passive buzzers, this module includes a built-in oscillating circuit and does not require external frequency signals—simply connect power, and it produces a loud, clear alarm sound. With its durable construction and high sound output, the 12V active buzzer is ideal for use in security systems, fire alarms, door indicators, industrial machines, and other alert-based applications. Key Features Self-driven active buzzer (no PWM signal needed) Operates directly from a 12V DC power supply Loud and consistent tone (typically ~85-95dB) Easy to integrate into security and automation systems Compact cylindrical or square design (varies by model) Long-lasting and reliable operation Product Specifications Feature Specification Buzzer Type Active (with internal oscillator) Operating Voltage 12V DC Operating Current 10mA – 30mA (approx.) Sound Output ~85 – 95 dB (at 10 cm distance) Frequency Fixed (~2.5kHz to 3kHz, depending on model) Mounting Type PCB mount / panel mount Case Material ABS plastic or epoxy resin (varies) Dimensions ~30mm diameter x 15mm height (varies) Wire Leads or Terminals Varies (2-pin or screw terminals) Polarity Marked Yes Applications Security and fire alarm systems Intrusion alert devices Industrial equipment warnings Door entry/exit indicators Automation and fault notifications Automotive and robotics alert systems
