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Product Detailed Parameters
- Description：22MM ALARM+LED;20-28 VAC/DC; 85
- 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：2 PPS
- 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 ZT028LADP2R is an industrial-grade audio indicator and alarm manufactured by Mallory Sonalert Products Inc. It operates on a 28 Vdc supply with a current rating of 40 mA. The device produces a sound pressure level of 95 dBA at a frequency of 3.9 kHz, utilizing a fast double pulse tone pattern. It features integrated red LED lighting for visual indication. Physical dimensions include a diameter of 30.74 mm and a height of 43.45 mm. The unit employs terminal block connections and is designed for panel mounting.
Feature Summary
- Integrates audible alarm and visual LED indicators in a single compact housing
- Produces a fast double pulse acoustic signal for high-attention alerts
- Constructed for industrial environments with robust panel mount design
Applications
- Industrial machinery status monitoring
- Factory safety warning systems
- Control panel alarm integration
Procurement Notes
Verify the specific ordering suffix to confirm the exact voltage, sound pattern, and LED color configuration required for the application. Confirm terminal block orientation and panel cutout dimensions against the official datasheet before procurement. Ensure the supply voltage matches the 28 Vdc specification to prevent damage or malfunction.
Selection Notes
Select this component when a combined audible and visual alert is necessary within an industrial control environment. The 28 Vdc rating suits standard low-voltage DC control circuits. Consider the 95 dBA output level relative to ambient noise requirements. Verify that the terminal block connection method aligns with existing wiring infrastructure.
Part Context
This part belongs to the ZT series of industrial audio indicators from Mallory Sonalert. The series is characterized by durable construction suitable for harsh environments. The ZT028LADP2R specifically combines acoustic signaling with red LED illumination, offering a dual-modality alert solution for critical system notifications.
Replacement Considerations
Consult the official Mallory Sonalert replacement guide for verified substitute part numbers. Cross-reference specifications such as voltage, SPL, and physical dimensions to ensure compatibility.
