ZT028LDCTY30

Overview

The ZT028LDCTY30 is an industrial-grade audio indicator manufactured by Mallory Sonalert Products Inc. It operates on a DC voltage range of 20 to 28 VDC with a current draw of 40 mA. The device features a piezoelectric sounder producing a continuous tone at 3.9 kHz for up to 30 seconds, achieving a sound pressure level of 85 dB at 20 V measured from a distance of 61 cm. An integrated red LED provides visual indication. The unit utilizes terminal block connections and is designed for panel mounting.

Feature Summary

• Integrates a piezoelectric buzzer with a red LED for simultaneous audio and visual signaling
• Capable of operating in a continuous mode for a duration of 30 seconds
• Features internal drive circuitry requiring only a DC power supply input
• Constructed with a terminal block interface for secure electrical connection

Applications

• Industrial machinery status monitoring
• Control panel alarm systems
• Safety equipment indicators
• Process control audio alerts

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to ensure correct configuration. Confirm that the required 20-28 VDC supply matches the operational specifications. Check for RoHS compliance documentation if environmental regulations apply to the deployment environment. Ensure the panel cutout dimensions accommodate the 22 mm diameter housing for proper installation.

Selection Notes

Select this component when a combined audible and visual alert is required for industrial environments. The 22 mm form factor suits standard panel layouts. The 30-second continuous operation mode distinguishes it from standard continuous-tone buzzers. Verify that the terminal block termination method aligns with the system's wiring infrastructure before finalizing the design.

Part Context

This part belongs to the ZT series of industrial audio indicators from Mallory Sonalert. The series is characterized by robust construction suitable for demanding environments. The ZT028LDCTY30 specifically denotes the variant with a red LED and terminal block connections. It is distinct from other series such as ZA or SCE which may feature different mounting styles or voltage ranges.

Replacement Considerations

Cross-reference with ZT028LDCTB30 for similar acoustic performance but verify the specific mode of operation differences. Ensure any substitute maintains the 22 mm mounting diameter and compatible voltage range.