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The SFM-27 3-24V Piezo Active Buzzer emits a 95dB continuous beep for immediate audible signaling. With a wide 3-24V DC range, it integrates directly into security systems or DIY projects. Low 12mA power consumption makes it efficient for battery-powered electronics.
Key Features
- 3-24V DC Input: Wide operating window for multiple power sources. Fits standard battery and logic level voltages easily.
- 95dB Sound Output: High-intensity beep tone for clear signaling. Cuts through ambient noise in industrial or outdoor settings.
- 12mA Current Draw: Low power consumption during active states. Preserves battery life in portable security devices.
- Internal Drive Circuit: Direct DC power compatibility. Simplifies integration by removing the need for external oscillators.
- Thermal Resistance: -20 to +80°C operating temperature range. Withstands heat inside electrical panels during local load shedding.
Frequently Asked Questions
How to connect SFM-27 buzzer to Arduino?
Attach the red lead to a digital output pin and the black lead to the ground. Code the pin to HIGH to trigger the continuous 95dB alarm.
What is the sound level of SFM-27 buzzer?
This model outputs 95dB of sound pressure at rated voltage. It remains audible over heavy machinery or loud ambient environments.
