The KY-012 Active Buzzer Module is a simple 3-pin module that produces a clear, single-tone sound at 2.5 kHz. It operates without the need for pulse width modulation (PWM) or complex coding—just set the signal pin to HIGH to activate it. Ideal for adding audio to electronics or Arduino projects, this module is easy to use and integrates seamlessly. It generates a continuous tone when the signal is high, making it perfect for applications requiring consistent sound, such as alarms, notifications, or detection systems. With its single-pin operation, it simplifies the process of incorporating sound into your projects, making it a practical choice for a variety of uses. Features: Min/Max Operating Voltage 3.3V to 5V Maximum Current: 30mA Resonance Frequency: 2500Hz ± 300Hz continuous Minimum Sound Output 85Db @ 4in (10cm) Storage Temperature: -22°F to  221°F (-30°C to  105°C) Operating Temperature: -4°F to 158°F (-20°C to 70°C) Dimensions: 0.73in X 0.59in (18.5mm X 15mm) Package Includes:        1x KY-012 Active Buzzer Module Related