20PCS Active Buzzer, 85dB Mini Electromagnetic Alarm Buzzer, Loud 5V Electronic Alarm Magnetic Long Continuous Beep for Arduino DIY Projects Smoke Detector Alarm, 25mA Low Current Consumption

Rated voltage: DC 5V
Diameter : 12mm ;
Spacing of the foot : 6.5mm ;
Height : 8.5mm
Current : <250MA
Sensitivity/SPL: Min 85 dB
Resonant frequency: 2300-2500 ± 300Hz
Plug & Play: This active buzzer features an internal oscillation circuit, eliminating the need for an external PWM signal or complicated drive circuits. Simply connect it to a DC power supply to produce an instant fixed-tone alert—a perfect plug-and-play solution for engineers, beginners, and fast prototyping.
Loud Audible Alert: Equipped with a high-performance electromagnetic driver, this buzzer delivers a minimum 85dB sound pressure level at 10cm. It cuts through ambient noise in kitchens, industrial workshops, and outdoor environments, making it ideal for alarm systems, security devices, and status indicators.
Low Current Consumption: Rated at DC 5V with typical operating current below 25mA, this buzzer is optimized for low-power applications. Whether you are building battery-powered smart locks, portable medical devices, or wireless IoT sensors, it provides reliable audible feedback without draining your power budget.
Wide Voltage Compatibility: Supporting an input range of 4-8V DC and an operating voltage of 2.5-4V, this active buzzer easily adapts to various system power rails. The stable 2300-2500Hz ±300Hz resonant frequency ensures consistent tone output across different voltage conditions.
Versatile for DIY Projects: From Arduino and Raspberry Pi prototypes to smoke detectors, microwave completion tones, and industrial PLC alerts—this electromagnetic buzzer fits seamlessly into any project that requires simple yet effective audible feedback. Its compact 2-pin DIP package makes it easy to solder onto PCBs or use with breadboards

Product summary

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