PK-21A29WQ

Overview

The PK-21A29WQ is an internally driven piezoelectric indicator manufactured by Mallory Sonalert Products Inc. It operates on a DC single tone at 12V with a rated current of 18mA and a frequency of 3kHz. The device produces a sound pressure level of 85dB at 12V measured at 30cm. It features wire lead termination and panel mount installation style.

Feature Summary

• Internally driven piezoelectric design for direct connection
• Single tone audio output capability
• Wire lead termination for flexible integration

Applications

• Panel mounted industrial indicators
• Equipment status signaling
• Control panel alarm systems

Procurement Notes

Verify the specific voltage rating and acoustic performance against the official datasheet before integration. Confirm that the wire lead termination method matches the target assembly requirements. Ensure the operating temperature range aligns with the environmental conditions of the intended application site to guarantee reliable long-term operation.

Selection Notes

Select this component when a simple, internally driven audible signal is required for panel mounting. The 12VDC specification suits standard low-voltage control circuits. Consider the 85dB output level relative to ambient noise levels in the deployment environment to ensure adequate audibility without requiring additional amplification stages.

Part Context

This part belongs to the Mallory Sonalert portfolio of audio indicators and alarms. The manufacturer specializes in piezoelectric devices for industrial, medical, and consumer applications. The SC series heritage informs the design philosophy of these compact, reliable alerting components used globally in safety and monitoring equipment.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.