Mallory Sonalert SC628R

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Alarm; 6-28VDC; 80-91db; 2900Hz; Panel Mount; Screw Terminals; Continuous
Manufacturer #: SC628R
Allied Stock #: 70186619

RoHS Compliant Part



Datasheet Datasheet

Pricing (USD) & Availability
Standard Pricing
$19.567 (Each)
1 $19.567
10 $18.979
50 $17.802
100 $16.439

253 can ship immediately.

1660 on order.

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Minimum Quantity: 1

Multiples Of: 1
Product Specifications
Product Attribute Attribute Value Search
Product Header Piezo-Electric Buzzer
Series SC Series
Color Black
Current Rating 18 mA
Diameter 42.85 mm
Frequency 2.9 kHz
Mounting Style Panel
Supply Voltage 6 to 28 VDC
Temperature Range -30 to +65 °C
Temperature, Opening, Maximum +65 °C
Minimum Operating Temperature -30 °C
Termination Screw Terminal
Type Electro-Acoustic
Operation Continuous
Sound Level 75 to 85 dBA
Primary Type Buzzer
Special Features Medium Sound Level
Tone Continuous
Decibel Range 68 to 80 dBA
Decibels at 1 Meter 80 dBA @ 2 ft


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Mallory Sonalert SC Series — 30mm Piezo Alarms with Screw Neck Panel Mount:

The Mallory SC Series offers a transducer with an indicator internally driven with piezo technology. Voltages range from 1 VDC to 250 VAC and an extensive range of warning sound options are available. Key markets for panel-mount audible alarms from Mallory are security management, environmental control, industrial, and manufacturing. Specific applications include wastewater treatment plants, refineries, petrochemical facilities, power plants, pharmaceutical manufacturing, and industrial process automation.


  • Fits in 30 mm Panel Hole
  • See Table/Data Sheet for cUL Approval
  • NEMA 4X When Used w/P/N ACC03
  • dB Distance = 2 ft (60 cm)

    Double Unit Warblers SC628WR, SC628JWR, SC628FW, SC628FJW:
    The double unit warbler models require two audible alarm units to generate the alternating warble sound. The following combinations of models are possible:
  • Medium Loud - Fast Warble:
  • Use SC628DR with SC628WR (alternating 1900 Hz & 2900 Hz)
  • Use SC628HR with SC628WR (alternating 2900 Hz & 4500 Hz)
  • Medium Loud - Slow Warble:
  • Use SC628DR with SC628JW (alternating 1900 Hz & 2900 Hz)
  • Use SC628HR with SC628JW (alternating 2900 Hz & 4500 Hz)
  • Soft - Fast Warble:
  • Use SC628ER with SC628FW (alternating 1900 Hz & 2900 Hz)
  • Soft – Slow Warble:
  • Use SC628ER with SC628FJW (alternating 1900 Hz & 2900 Hz)

  • Product Added to Cart
    Mallory Sonalert
    Alarm; 6-28VDC; 80-91db; 2900Hz; Panel Mount; Screw Terminals; Continuous
    Allied Stock #: 70186619
    Mfr's Part #: SC628R
    $19.567 Each
    Quantity added: