ZT028LDCTY15

Overview

The ZT028LDCTY15 is an industrial-grade audio indicator and alarm manufactured by Mallory Sonalert Products Inc. It features a piezoelectric buzzer with an integrated LED, designed for panel mounting via terminal block connections. The device operates on a DC voltage range of 20 to 28 volts, drawing a current of 40 mA. It produces a sound pressure level of 85 dB at 20 V measured at 61 cm, with a frequency of 3.9 kHz. The unit has a diameter of 30.74 mm and a height of approximately 43.44 mm.

Feature Summary

• Combines audible alarm and visual LED indication in a single industrial enclosure
• Internally driven piezoelectric transducer eliminates need for external drivers
• Terminal block termination provides secure electrical connection
• Panel mount design suitable for control panels and machinery

Applications

• Industrial control panels requiring combined audio-visual alerts
• Machinery status indicators in manufacturing environments
• Safety systems needing high-visibility and high-audibility warnings
• Process equipment monitoring stations

Procurement Notes

Verify the specific suffix code against the manufacturer's official naming convention to confirm LED color and acoustic tone. Ensure the input power supply matches the 20-28 VDC requirement. Confirm terminal block compatibility with existing wiring harnesses. Check for any regional certification requirements such as UL or CE before finalizing procurement.

Selection Notes

Select this model when both audible and visual alarms are required from a single component. The 30.74 mm diameter fits standard cutouts for the ZA series but offers higher output than basic indicators. Consider the 40 mA current draw for power budget calculations. Verify that the 3.9 kHz frequency is appropriate for the specific noise environment of the installation site.

Part Context

This part belongs to the ZT series of industrial alarms from Mallory Sonalert. The ZT series is characterized by robust construction and high sound pressure levels. It differs from the ZA series by offering higher durability and louder output. The LD designation typically indicates a specific LED configuration within the product line.

Replacement Considerations

Direct replacements may include other ZT series models with similar voltage and mounting dimensions. Verify that substitute parts match the terminal block type and overall envelope size. Cross-reference with Mallory Sonalert's official substitution guide for approved equivalents.