PK-20A38WQ

Overview

The PK-20A38WQ is a piezoelectric industrial audible alarm manufactured by Mallory Sonalert Products Inc. It operates on a continuous tone at a frequency of 3.8 kHz with a sound pressure level of 95 dBA. The device is rated for 12 VDC nominal voltage and accepts an input range of 3 to 24 VDC, drawing a current of 20 mA. It features wire lead termination and flange mount installation. The unit measures 23 mm in length, 18 mm in width, and has a diameter of 23 mm.

Feature Summary

• Piezoelectric transducer technology for reliable audio indication
• Continuous tone output optimized for industrial environments
• Flange mount design with wire lead connections

Applications

• Industrial machinery status indicators
• Equipment fault alarms
• Process control system alerts

Procurement Notes

Verify the specific voltage rating and mounting configuration against the official datasheet before procurement. Confirm that the wire lead termination style matches the assembly requirements. Ensure the operating environment temperature falls within the specified limits for the PK series. Cross-reference the part number suffix to confirm exact acoustic and electrical characteristics.

Selection Notes

Select this component when a compact, high-decibel indicator is required for panel mounting. The 95 dBA output ensures audibility in noisy settings. The wide voltage tolerance allows flexibility in power supply design. Consider the physical dimensions and flange mount style for enclosure integration.

Part Context

This part belongs to the PK series of industrial-grade audible alarms from Mallory Sonalert. The series is characterized by robust construction suitable for demanding environments. These devices are distinct from medical or consumer-grade indicators due to their higher durability and specific acoustic profiles designed for factory and industrial applications.

Replacement Considerations

Consult the manufacturer's cross-reference guide for verified substitutes. Ensure any replacement maintains the same voltage range, frequency, and decibel output. Verify mechanical compatibility including flange dimensions and terminal type.