PL-21N30WQ

Overview

The PL-21N30WQ is a piezoelectric industrial buzzer manufactured by Mallory Sonalert. It operates within a voltage range of 1.5 to 30 VDC and draws a rated current of 12 mA at 12 VDC. The device produces an 80 dB sound pressure level at a frequency of 3 kHz in a slow pulse mode. Physical dimensions are 24 mm in diameter and 9.5 mm in height, featuring wire lead termination and flange mount installation style.

Feature Summary

• Piezoelectric technology for reliable audio indication
• Slow pulse tone generation capability
• Flange mount design with wire lead connections

Applications

• Industrial equipment status indication
• Control panel alarm signaling
• Low voltage DC system alerts

Procurement Notes

Verify the specific ordering suffix against the manufacturer datasheet to confirm electrical ratings and mounting configuration. Ensure the application voltage falls within the 1.5 to 30 VDC operating range. Confirm that the 80 dB SPL meets acoustic requirements for the intended environment. Check for RoHS compliance documentation if required by project specifications.

Selection Notes

Select this component when a compact, low-current piezoelectric indicator is required for panel mounting. The slow pulse feature distinguishes it from continuous tone devices. Consider the 24 mm diameter for panel cutout compatibility. Verify that wire leads suit the wiring infrastructure rather than PCB or screw terminals.

Part Context

This part belongs to the PL series of piezoelectric buzzers designed for industrial applications. The series offers various voltage and acoustic options. The PL-21N30WQ specifically targets low-voltage DC environments requiring moderate sound output. It serves as a visual-audio alert component in control systems.

Replacement Considerations

Cross-reference with other Mallory Sonalert PL series parts for similar form factors. Verify electrical parameters match before substitution. No direct public substitute part numbers are confirmed in the provided data.