EFM-240

Alarms, Buzzers, And Sirens Overview

The EFM-240 is a through-hole piezoelectric buzzer manufactured by East Electronics. It operates at a rated voltage of 12 V with a current consumption of 15 mA. The device produces a sound pressure level of 90 dB at 12 V measured at a distance of 30 cm, with a resonant frequency of 2.8 kHz. The unit features PC pin mounting and has a diameter of 30.2 mm (1.189 inches) and a maximum seated height of 14.50 mm (0.571 inches). It functions within an operating temperature range of -20°C to 70°C.

Alarms, Buzzers, And Sirens Feature Summary

• Through-hole PC pin mounting for standard PCB integration
• High sound pressure output of 90 dB at rated voltage
• Robust construction suitable for industrial control environments

Alarms, Buzzers, And Sirens Applications

• Industrial control panels
• Alarm systems
• Audio signal indication in electronic devices

Alarms, Buzzers, And Sirens Procurement Notes

Verify the specific datasheet version from East Electronics or authorized distributors to confirm mechanical dimensions and electrical tolerances. Ensure the operating environment stays within the specified -20°C to 70°C range. Confirm that the 12 V DC supply matches the rated voltage to prevent damage or reduced performance. Check for any specific RoHS compliance requirements if applicable to your assembly process.

Alarms, Buzzers, And Sirens Selection Notes

Select this component when a high-volume audible alert is required for 12 V systems. The through-hole package is suitable for prototyping or applications requiring mechanical robustness over surface-mount options. Consider the 90 dB SPL requirement against ambient noise levels. Verify that the 30.2 mm diameter fits within the available enclosure space alongside the 14.50 mm height constraint.

Alarms, Buzzers, And Sirens Part Context

This part belongs to the East Electronics line of active and passive buzzers designed for general-purpose audio signaling. The EFM series typically utilizes piezoelectric elements for efficient sound generation. These components are commonly found in consumer electronics, automotive indicators, and industrial machinery where reliable acoustic feedback is necessary without complex driver circuits.

Alarms, Buzzers, And Sirens Replacement Considerations

Consult official cross-reference lists from East Electronics for direct substitutes. Ensure any replacement maintains the 12 V rating, 2.8 kHz frequency, and through-hole form factor. Verify that alternative parts meet the same 90 dB SPL requirement and physical dimensions to ensure compatibility with existing PCB layouts and enclosures.