SC628ADJ

$71.54

Description：BUZZER PIEZO 42.85MM PNL MNT
Series：SC
Mfr：Mallory Sonalert Products Inc.
Package：Bulk

SKU:085fb8d0605c Category: Alarms, Buzzers, and Sirens Brand: Mallory Sonalert Products Inc.

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Product introduction

Product Detailed Parameters

Description：BUZZER PIEZO 42.85MM PNL MNT
Series：SC
Mfr：Mallory Sonalert Products Inc.
Package：Bulk
Driver Circuitry：Indicator, Internally Driven
Input Type：AC, DC
Frequency：2kHz
Technology：Piezo
Operating Mode：Pulse, Slow
Duration：0.5 ~ 2.5 PPS
Sound Pressure Level (SPL)：60dB @ 7.5V, 61cm
Current - Supply：6 ~ 20mA
Port Location：Top
Operating Temperature：-30°C ~ 65°C
Approval Agency：-
Ratings：-
Ingress Protection：NEMA 3R, 4X, 12
Mounting Type：Panel Mount
Termination：Screw Terminal, Quick Connect Tab - 0.250" (6.35mm)
Height - Seated (Max)：1.399" (35.54mm)
Voltage Range：6 ~ 28V
Size / Dimension：1.687" Dia (42.85mm)

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SC628ADJ

Overview

The SC628ADJ is an industrial-grade piezoelectric buzzer from the Mallory Sonalert SC series. It operates on a voltage range of 6 to 28 VAC or DC with a current rating of 30 mA. The device produces a slow pulse tone at a frequency of 2.9 kHz and achieves a sound pressure level of 80 dBA. Designed for panel mounting, it features screw terminals for connection. The unit has a diameter of 1.687 inches (42.85 mm) and weighs approximately 45 grams.

Feature Summary

Industrial-grade construction suitable for demanding environments
Piezoelectric technology for reliable audio indication
Internal driver circuitry simplifies integration
Panel mount design with screw terminal connections

Applications

Industrial machinery status indication
Equipment fault alarm systems
Control panel audio alerts
Safety warning devices

Procurement Notes

Verify the specific suffix against official Mallory Sonalert documentation to confirm electrical parameters and termination type. Ensure the operating voltage matches the system supply. Confirm RoHS compliance requirements if applicable. Check for any regional certification needs such as CUL approval before procurement.

Selection Notes

Select this model for applications requiring a slow pulse audible alert in industrial settings. Compare sound pressure levels and drive voltages against other SC series variants like SC628ANPR or SC628NJR to match specific loudness and waveform requirements. Verify panel cutout dimensions align with the 1.687-inch diameter specification.

Part Context

The SC628ADJ belongs to the Mallory Sonalert SC series, a foundational line of electronic sound alarms introduced in the 1960s. This series remains a standard for panel-mounted audio indicators in industrial, medical, and transportation sectors. The manufacturer, Mallory Sonalert Products Inc., continues to produce these components based on historical patent technologies.

Replacement Considerations

SC628ANPR offers similar form factor with fast pulse and higher SPL. SC628NJR provides constant tone with higher volume. Verify pin compatibility and voltage ratings when substituting.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.

Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.