PL-27A35ERQ

Overview

The PL-27A35ERQ is an internally driven piezoelectric indicator manufactured by Mallory Sonalert Products Inc. It operates within a voltage range of 3 to 24 Vdc, with a rated voltage typically specified at 12 Vdc. The device features a resonant frequency of 3500 Hz and produces a sound pressure level of 95 dB when measured at a distance of 30 cm under rated conditions. It draws a current of 15 mA during operation. The unit utilizes panel mount screw terminal or quick connect end types for installation.

Feature Summary

• Internally driven piezoelectric design eliminates the need for external oscillators
• Wide operating voltage range supports flexible power supply integration
• High acoustic output ensures clear audible signaling in noisy environments
• Panel mount construction allows for secure mechanical attachment

Applications

• Industrial machinery status indication
• Medical equipment alarm systems
• Transportation vehicle monitoring panels
• Consumer appliance operational feedback

Procurement Notes

Verify the specific rated voltage requirement against your system's power supply, as the component supports a wide input range but has a nominal rating. Confirm the mounting method compatibility, noting the availability of both screw terminal and quick connect options. Ensure the enclosure provides adequate protection for the intended environmental conditions. Cross-reference the acoustic requirements with the 95 dB specification at 30 cm to confirm suitability for the application space.

Selection Notes

Select this component when a self-contained audio source is required without complex driving circuitry. The wide voltage tolerance simplifies power distribution across different subsystems. Consider the physical dimensions and mounting style to ensure fit within the designated panel area. Evaluate the acoustic needs against the specified decibel level to guarantee audibility over background noise levels typical of the target environment.

Part Context

Mallory Sonalert Products Inc. specializes in audio and visual warning devices, including alarms, indicators, and transducers. The company has a long history of innovation in electronic signaling solutions, serving diverse sectors such as healthcare, industrial automation, and transportation. This product line emphasizes reliability and compliance with industry standards for safety and performance.

Replacement Considerations

Consult Mallory Sonalert directly for verified substitute part numbers. Alternative components must match the electrical specifications, particularly the 3-24 Vdc operating range and 3500 Hz frequency. Physical mounting constraints and acoustic output levels should also be compared to ensure functional equivalence.