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Product Detailed Parameters
- Description：22MM ALARM +LED;20-28 VAC/DC; 8
- Series：-
- Mfr：Mallory Sonalert Products Inc.
- Package：Retail Package
- Driver Circuitry：Indicator, Internally Driven
- Input Type：AC, DC
- Frequency：3.9kHz
- Technology：-
- Operating Mode：Pulse, Fast
- Duration：0.5 ~ 8 PPS in 30 Sec
- Sound Pressure Level (SPL)：85dB @ 20V, 61cm
- Current - Supply：40mA
- Port Location：Top
- Operating Temperature：-30°C ~ 65°C
- Approval Agency：cUL
- Ratings：-
- Ingress Protection：NEMA 3R, 4X, 12
- Mounting Type：Panel Mount
- Termination：Terminal Block
- Height - Seated (Max)：2.234" (56.75mm)
- Voltage - Rated：-
- Voltage Range：20 ~ 28V
- Size / Dimension：1.210" Dia (30.74mm)
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Overview
The ZT028LASU2R is an industrial-grade buzzer and sound indicator manufactured by Mallory Sonalert Products Inc. It operates on a voltage range of 16 to 28 VAC or DC. The device features a 22mm diameter form factor with panel mount installation. It produces a sound pressure level between 85 and 95 dBA at a frequency of 3.9 kHz in a fast pulse mode. The unit includes an integrated blue LED for visual indication and holds CUL certification.
Feature Summary
- Integrated piezoelectric buzzer with internal driver circuitry
- Combined acoustic alarm and blue LED visual indicator
- Industrial-grade construction suitable for harsh environments
- Fast pulse tone generation for high-attention alerts
Applications
- Industrial machinery status monitoring
- Factory automation control panels
- Heavy equipment warning systems
- Commercial HVAC system alarms
Procurement Notes
Verify the specific suffix configuration against the official Mallory Sonalert datasheet to ensure compatibility with required voltage and mounting standards. Confirm that the CUL certification meets local regulatory requirements for the intended deployment region. Check current supply chain availability as industrial components may experience variable lead times.
Selection Notes
Select this model when both audible and visual alerts are required within a compact 22mm footprint. Ensure the operating environment supports the specified voltage range and that panel cutout dimensions match the physical housing. Consider the fast pulse characteristic for applications demanding immediate operator attention compared to continuous tones.
Part Context
This component belongs to the ZT series of industrial audio indicators designed for robust performance in demanding settings. It complements other Mallory Sonalert products by providing dual-mode signaling. The series is engineered for reliability in continuous operation cycles typical of manufacturing and utility infrastructure.
Replacement Considerations
Direct substitutes include the ZA028LASU2, which shares similar electrical characteristics and form factors. Verify pinout compatibility and mounting hole alignment before swapping units to ensure mechanical fit without modification.
