Maximize your system's audible reach with the Heavy-Duty Series. This 40mm Piezoelectric Buzzer (S=40mm refers to the external shell/mounting diameter) is the definitive solution for high-noise environments. With a massive voltage range and a larger resonant chamber, it delivers a powerful, piercing alert that ensures safety and status awareness in industrial and automotive settings.
Maximum Volume Displacement: The 40mm housing provides the largest physical resonance area, producing a deep, cutting tone (up to 95dB+) that penetrates through engine noise and factory machinery.
Ultra-Wide Voltage Versatility: From a 3V battery to a 24V industrial rail, this buzzer maintains a consistent performance, making it the perfect universal spare part for your toolkit.
Rugged Flange Mounting: Designed with integrated screw holes on the 40mm wings, ensuring the device stays securely attached even under heavy vibration or mechanical stress.
High-Impact ABS Construction: The durable outer shell is engineered to resist cracks and environmental wear, protecting the internal piezo element for years of service.
Factory Safety Systems: Use as a "Clear the Area" siren for automated machinery, robotic arms, or conveyor belt startups.
Truck & Marine Alarms: The 24V compatibility makes it ideal for heavy-duty vehicle reverse alarms or engine overheat warnings.
Large-Scale Power Units: Perfect for solar farm inverters, high-capacity UPS systems, and industrial battery racks.
Facility Alerts: Integrate into building management systems for basement flood alerts or emergency exit warnings.
Constant High-Frequency Tone: Emits a continuous, sharp beep that is biologically difficult for the human ear to ignore.
Heavy-Duty Leads: Equipped with high-strand count red and black wires that resist fatigue and breakage during installation.
Low Current Draw: Despite its size, it operates with high efficiency, typically drawing less than 20mA, which preserves your primary power source.
Instant Response: Zero warm-up time; the buzzer reaches full volume the millisecond power is applied.
Product Type: Large-Diameter Electronic Piezo Buzzer
Operating Voltage: DC 3V – 24V
Included: 1x 40mm Wired Buzzer
1. Does "S=40mm" mean the hole size or the whole unit? "S=40mm" typically refers to the overall span including the mounting tabs. This allows you to plan your panel space or mounting bracket dimensions accordingly.
2. Is it louder at 24V than at 12V? Yes. While it functions at lower voltages, the decibel output scales with the voltage. For maximum "get-out-of-the-way" volume, 24V is recommended.
3. Can I use this with a 5V microcontroller? Yes! It will trigger at 5V, though the volume will be moderate.
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