ZA028SDDD1

Alarms, Buzzers, And Sirens Overview

The ZA028SDDD1 is a piezoelectric buzzer from the Mallory Sonalert ZA series, designed for panel mounting with terminal block connections. It operates on a DC input voltage range of 16 to 28V and draws 40mA of current. The device produces a continuous tone at a frequency of 3.3kHz with a sound pressure level of 75dB measured at 16V and 61cm. Physical dimensions include a diameter of 30.74mm and a maximum height of 56.75mm. It features internal drive circuitry and an LED indicator. The unit is rated for operation between -30°C and 65°C and holds cUL and UL certifications.

Alarms, Buzzers, And Sirens Feature Summary

• Integrates an internal driver circuit with a visible LED indicator for status monitoring
• Provides a continuous audible alert signal via piezoelectric technology
• Supports secure panel mounting using terminal block electrical connections

Alarms, Buzzers, And Sirens Applications

• Industrial control panels requiring visual and audible status indication
• Electrical enclosures needing NEMA-rated alarm signaling
• Machine safety systems for fault detection alerts

Alarms, Buzzers, And Sirens Procurement Notes

Verify the specific suffix configuration against official Mallory Sonalert documentation to ensure correct acoustic output and electrical characteristics. Confirm that the terminal block interface matches the target wiring harness requirements. Check for updated certification marks such as cUL or UL compliance relevant to the installation region. Ensure environmental ratings meet the operational temperature and ingress protection needs of the deployment site.

Alarms, Buzzers, And Sirens Selection Notes

Select this model when a continuous tone is required rather than pulsed or multi-tone variations within the ZA series. The 3.3kHz frequency offers distinct audibility in moderate noise environments. The 75dB output is suitable for general industrial warning applications where extreme loudness is not critical. Verify compatibility with 16-28V DC power supplies commonly found in control cabinets.

Alarms, Buzzers, And Sirens Part Context

This component belongs to the Mallory Sonalert ZA Series, which consists of 22mm panel mount alarms. The series provides various acoustic patterns including continuous, pulse, and multi-tone options. The ZA028 base designation indicates the standard size and form factor used across multiple variants in this product line.

Alarms, Buzzers, And Sirens Replacement Considerations

ZA028MDMP1

Alarms, Buzzers, And Sirens FAQ

What is the operating voltage range for the ZA028SDDD1?

The device operates within a DC voltage range of 16 to 28 volts.

Does the ZA028SDDD1 include a visual indicator?

Yes, the unit includes an integrated LED indicator alongside the audible alarm function.