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Product Detailed Parameters
- Description：22MM ALARM +LED;20-28 VDC; 85-9
- Series：-
- Mfr：Mallory Sonalert Products Inc.
- Package：Retail Package
- Driver Circuitry：Indicator, Internally Driven
- Input Type：DC
- Frequency：3.9kHz
- Technology：-
- Operating Mode：Chime
- Duration：-
- 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 ZT028LDCM1R30 is an industrial-grade audible and visual alarm indicator manufactured by Mallory Sonalert. It operates on a DC voltage range of 20 to 28 V with a current draw of 40 mA. The device produces a loud chime sound at a frequency of 3.9 kHz, achieving a sound pressure level of 85 dB at 61 cm. It features an integrated red LED for visual indication. The unit utilizes terminal block connections for secure wiring and is designed for panel mounting applications.
Feature Summary
- Combines audible chime alerts with simultaneous red LED visual signaling
- Designed for industrial environments with robust construction
- Utilizes terminal block termination for reliable electrical connection
Applications
- Industrial machinery status monitoring
- Factory safety warning systems
- Control panel alarm indicators
Procurement Notes
Verify the specific suffix R30 against official Mallory Sonalert documentation to confirm the exact acoustic mode and visual configuration. Ensure the input power supply matches the 20-28 Vdc requirement. Confirm that terminal block wiring methods are compatible with the installation environment. Cross-reference the part number with the latest datasheet to avoid substitution errors.
Selection Notes
Select this model when both audible and visual alarms are required in a single component. The 3.9 kHz frequency provides distinct audibility. The terminal block interface suits fixed installations where vibration resistance is critical. Consider the 85 dB output level relative to ambient noise requirements.
Part Context
This component belongs to the ZT series of industrial audio indicators. The series is characterized by high durability and consistent performance in demanding settings. The ZT line typically integrates piezoelectric sounders with optical elements for comprehensive alerting solutions.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Consult Mallory Sonalert technical support for verified equivalents.
