The FMB-228 Panel Mount Piezo Buzzer is a reliable self-driven audible signalling device designed for industrial control panels, security systems, automation equipment, electrical enclosures, and commercial electronic applications. Rated for 24V DC operation with a wide operating voltage range of 1.5V to 28V DC, this piezoelectric buzzer produces a clear single-tone output at 3500Hz, making it ideal for alarms, equipment status indication, and warning notifications.
Its 41mm round panel-mount housing provides secure installation in control cabinets, machinery, operator panels, and electrical equipment. The lead wire termination offers flexible wiring and simplifies installation into both new and existing systems.
The self-driven design incorporates an internal oscillator, allowing the buzzer to operate directly from a DC power supply without requiring an external drive circuit. This reduces design complexity while ensuring reliable and maintenance-free operation.
Constructed using durable piezoelectric technology, the FMB-228 delivers dependable long-term performance with low power consumption, making it suitable for OEM equipment, industrial machinery, access control systems, medical equipment, and automation projects.
Features
Self-driven piezoelectric buzzer
Rated for 24V DC operation
Wide operating voltage range: 1.5V to 28V DC
Clear single-tone output
Operating frequency of 3500Hz
Round panel-mount design
Flexible lead wire termination
Built-in oscillator for direct DC operation
Reliable maintenance-free construction
Suitable for industrial and commercial applications
Specifications
Part Number: FMB-228
Product Type: Piezoelectric Buzzer
Drive Type: Self-Driven
Shape: Round
Mounting Type: Panel Mount
Rated Voltage: 24V DC
Operating Voltage Range: 1.5V - 28V DC
Voltage Type: DC
Frequency: 3500Hz
Tone Type: Single Tone
Termination: Lead Wire
Face Diameter: 41mm
Applications
Industrial control panels
Machine warning systems
Alarm and security systems
Access control equipment
Factory automation
Electrical switchboards
Process control systems
Medical equipment
OEM electronic products
Commercial and DIY electronic projects
What's in the box
1 x FMB-228 24V Panel Mount Piezo Buzzer 3500Hz Single Tone Leaded 41mm