PS-551D-220VQ

Overview

The PS-551D-220VQ is a piezoelectric alarm manufactured by Mallory Sonalert Products Inc. It operates on an AC/DC voltage range of 90 to 250 volts and produces a slow pulse tone at a frequency of 2900 Hz. The device delivers a sound pressure level of 105 dB and features bare wire leads for connection. Its physical dimensions are 54 mm in length and 41 mm in width, designed for bracket mounting applications.

Feature Summary

• Piezoelectric transducer technology for reliable audio signaling
• Internal driver circuitry supporting direct AC or DC input
• Slow pulse operational mode for distinct alert patterns
• Bracket mount design with bare wire termination

Applications

• Industrial machinery status indication
• High-voltage equipment alarm systems
• Commercial building safety alerts
• Heavy-duty vehicle warning signals

Procurement Notes

Verify the specific voltage rating and waveform requirements against the target power supply before procurement. Confirm that the bare wire termination method aligns with the installation environment's safety standards. Ensure the bracket mounting configuration fits the designated enclosure space. Cross-reference the slow pulse frequency specifications with system integration requirements to avoid interference.

Selection Notes

Select this model when high-volume acoustic output is required in environments with significant background noise. The wide voltage acceptance range simplifies integration into varying power distribution networks. Consider the physical size constraints during the mechanical design phase. Evaluate the need for internal driving capabilities versus external driver circuits based on system complexity.

Part Context

This component belongs to the PS series of industrial-grade audio indicators from Mallory Sonalert. The series is characterized by robust construction suitable for demanding environments. The PS-551D variant specifically addresses applications requiring higher voltage operation compared to standard low-voltage counterparts.

Replacement Considerations

Direct substitutes may include other Mallory Sonalert models within the PS series that share identical voltage ranges and mounting footprints. Verify compatibility with existing wiring harnesses due to the bare wire termination style.