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Product Detailed Parameters
- Description：BUZZER 30.74MM PNL MNT
- Series：ZT
- Mfr：Mallory Sonalert Products Inc.
- Package：Bulk
- Driver Circuitry：-
- Input Type：DC
- Frequency：3.9kHz
- Technology：-
- Operating Mode：Pulse, Fast
- 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)：1.710" (43.43mm)
- Voltage - Rated：-
- Voltage Range：20 ~ 28V
- Size / Dimension：1.210" Dia (30.74mm)
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Overview
The ZT028LDFP1R30 is an industrial-grade audible and visual alarm indicator manufactured by Mallory Sonalert. It operates on a DC voltage range of 20 to 28 VDC with a rated current of 40 mA. The device features a piezoelectric sounder producing a loud pulse tone at a frequency of 3.9 kHz, achieving a sound pressure level of 95 dBA. An integrated red LED provides visual indication. It utilizes terminal block connections for panel mounting and offers IP66 ingress protection against dust and water jets.
Feature Summary
- Combines high-decibel audible alarm with red LED visual indicator
- Features internal driver circuitry for direct connection
- Provides robust environmental sealing for harsh conditions
Applications
- Industrial machinery status monitoring
- Factory safety warning systems
- Control panel alarm integration
Procurement Notes
Verify the specific suffix '30' against the manufacturer's official datasheet to confirm the exact pulse timing or duration specifications associated with this variant. Ensure the input power supply strictly adheres to the 20-28 VDC rating to prevent component damage. Confirm that the terminal block wiring method matches the installation environment requirements before finalizing procurement orders.
Selection Notes
Select this model when both audible and visual alerts are required in a single unit. It is suitable for applications needing high visibility and audibility in noisy environments. Consider the IP66 rating for outdoor or washdown areas. Verify that the panel cutout dimensions accommodate the 30.7 mm diameter housing and that the terminal block wiring space is available.
Part Context
This component belongs to the ZT series of industrial audio indicators from Mallory Sonalert. The series is designed for demanding environments requiring reliable alarm signaling. The ZT series typically integrates piezoelectric transducers with electronic drivers to provide consistent performance across varying temperatures and voltages within the specified operating range.
Replacement Considerations
Consult the official Mallory Sonalert cross-reference documentation for verified substitutes. Generic replacements may not match the specific pulse characteristics or IP66 sealing requirements.
