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Product Detailed Parameters
- Description：22MM ALARM LED 20 28 VDC 85-95
- Series：-
- Mfr：Mallory Sonalert Products Inc.
- Package：Retail Package
- Driver Circuitry：Indicator, Internally Driven
- Input Type：DC
- Frequency：3.9kHz
- Technology：-
- Operating Mode：Single Tone
- Duration：-
- Sound Pressure Level (SPL)：85dB @ 20V, 60cm
- 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 ZT028LDCTB30 is an industrial-grade piezoelectric alarm and LED indicator manufactured by Mallory Sonalert Products Inc. It operates on a DC voltage range of 20 to 28V with a current consumption of 40mA. The device emits a continuous tone at a frequency of 3.9 kHz, achieving a sound pressure level of 85-95 dBA. It features terminal block connections for secure wiring and is designed for panel mounting applications.
Feature Summary
- Integrates audible alarm and visual LED indicator in a single unit
- Industrial design rated for harsh environments
- Internal driver circuitry simplifies integration
Applications
- Industrial machinery status indication
- Factory automation control panels
- Safety warning systems
Procurement Notes
Verify the specific acoustic output rating (85 or 95 dBA) required for your application against the datasheet specifications. Confirm that the terminal block connection type matches your existing wiring infrastructure. Ensure the operating voltage range of 20-28VDC aligns with your system power supply capabilities before finalizing procurement.
Selection Notes
Select this component when both audible and visual alerts are necessary within a confined space. The 22mm diameter allows for compact panel installations where larger indicators cannot fit. The internal drive capability eliminates the need for external driving transistors or complex circuitry, reducing overall system design complexity and component count.
Part Context
This part belongs to the ZT series of industrial audio indicators from Mallory Sonalert. The series is characterized by robust construction suitable for demanding industrial environments. It shares form factors with other ZT models but differs in acoustic output and LED color configurations.
Replacement Considerations
Direct replacements must match the 22mm diameter, terminal block termination, and 20-28VDC operating range. Verify that substitute parts offer comparable sound pressure levels and IP ratings if environmental sealing is required.
