SC110HJR

Overview

The SC110HJR is a piezoelectric industrial alarm manufactured by Mallory Sonalert Products Inc. It operates on 30 to 120 VAC or DC with a current draw of 24 mA. The device emits a slow pulse tone at 4500 Hz, achieving a sound pressure level of 98 dBA. Designed for panel mounting via screw terminals, it features an IP66 rating and holds Class I, Division 2 certification for hazardous environments.

Feature Summary

• Certified for use in Class I, Division 2 hazardous locations
• IP66 rated enclosure for environmental protection
• Internal driver circuitry for direct voltage application
• Piezoelectric technology for high-intensity audio output

Applications

• Industrial control panels requiring explosion-proof alarms
• Hazardous area monitoring systems
• Safety interlock indicators in chemical processing
• Marine and offshore equipment signaling

Procurement Notes

Verify the specific suffix configuration against the official Mallory Sonalert datasheet to ensure compliance with required hazardous location certifications and terminal types. Confirm that the operating voltage range matches the system supply before integration. Check for any recent product change notices regarding material composition or acoustic performance adjustments.

Selection Notes

Select this model when intrinsic safety or explosion-proof ratings are mandatory for the installation environment. The internal driver simplifies wiring compared to passive transducers. Ensure the panel cutout dimensions accommodate the 43 mm diameter housing and verify that the screw terminal connections align with available wiring gauges.

Part Context

This component belongs to the SC series of industrial buzzers from Mallory Sonalert. The series is characterized by robust piezoelectric construction and integrated drivers. Variants within the series differ primarily in tone patterns, voltage ratings, and environmental sealing specifications to suit diverse industrial signaling requirements.

Replacement Considerations

Direct replacements must match the Class I, Division 2 certification and IP66 rating. Verify that substitute models maintain the 43 mm mounting diameter and compatible screw terminal spacing. Cross-reference acoustic output levels to ensure adequate audibility in the target noise environment.