PL-27A35EPQ

Overview

The PL-27A35EPQ is a piezoelectric buzzer from the Mallory Sonalert industrial series, designed for panel mounting. It operates on a rated voltage of 12 VDC with an operating range of 3 to 24 VDC. The device produces a slow pulse tone at a resonant frequency of 3.5 kHz (±500 Hz) and delivers a sound pressure level of 95 dB. Maximum current consumption is specified in manufacturer documentation. The unit features a compact form factor measuring 37 mm by 24 mm.

Feature Summary

• Generates an audible slow pulse alarm signal suitable for industrial warning applications
• Utilizes piezoelectric technology for reliable acoustic output without external drivers
• Engineered for direct panel mounting with a robust industrial-grade housing

Applications

• Industrial backup alarms
• Machine status indicators
• Safety warning systems

Procurement Notes

Verify the specific datasheet revision when sourcing, as electrical tolerances such as frequency deviation may vary between manufacturing batches. Confirm that the required operating voltage falls within the 3 to 24 VDC range to ensure proper functionality. Ensure the mounting interface matches the physical dimensions of 37 mm by 24 mm for integration into existing enclosures or panels.

Selection Notes

Select this component when a high-decibel, slow-pulse indicator is required for environments where visual alerts are insufficient. The wide input voltage range allows compatibility with various DC power supplies commonly found in industrial control panels. Consider the physical size constraints during design, as the 37x24 mm footprint requires adequate panel space for installation and acoustic projection.

Part Context

This part belongs to the Mallory Sonalert industrial audio indicator line, known for durability in harsh conditions. It complements other models in the series that offer different frequencies or continuous tones. The product is distinct from consumer-grade buzzers due to its higher sound pressure level and broader operational voltage specifications, targeting professional equipment manufacturers.

Replacement Considerations

Direct substitutes must match the 3.5 kHz slow pulse characteristic and 95 dB output. Verify that alternative parts support the 3-24 VDC input range and fit the 37x24 mm mounting profile. Cross-referencing with other Mallory Sonalert industrial models may provide options with similar acoustic profiles but different voltage ratings.