Mallory Sonalert Products

- Headquartered in a new 22,000 square foot facility in Indianapolis, Indiana, Mallory Sonalert Products, Inc. is a leader in the manufacture and development of Sonalert® electronic audible signal products. The company has made its trademarked Sonalert line for over thirty years. In addition to sonalert products, Mallory also distributes a full range of audible signal devices including transducers, indicators, sirens, buzzers and related hardware to a broad range of customers in industrial, military and consumer electronic markets. 

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Go To Product Training Module Index Page

Digi-Key’s library of more than 2000 exclusive PTM Online… On Demand® product training modules is a collection of training tools created with you – the busy design engineer – in mind. They are provided with the cooperation of participating supplier partners. From this one source, you can learn about the latest products and technologies, download datasheets, check inventory, contact our technical staff, and place an order for same-day shipment.

These modules are available in audio and non-audio formats and listed by supplier in easy-to-find alphabetical order. Simply locate the module that interests you and click on your format of choice. We hope you find these tools useful, and with new modules added continuously, we invite you to stop back often to see what’s new.


Product Training Modules Online...On Demand® is a registered trademark of Digi-Key Corporation.


Updated PTM = Updated Product Training Module - PTM        New PTM = New Product Training Module - PTM

Module NamePreviewAudioNon-AudioDurationParts List
  • IEC60601-1-8 Compliant Medical Alarms
4.5MB1.3MB10 minParts List
  • Sonalert 22mm Panel Alarm Series
4.3MB1.6MB10 minParts List
  • Sonalert Panel Mount SCE Series
2.0MB449KB10 minParts List

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MSE Series Miniature Board-Mount BuzzersMSE Series Miniature Board-Mount Buzzers - Mallory Sonalert MSE series of miniature board mount buzzers offers 15 new distinctive warning sounds never heard in a compact piezo package. Sounds include chime, chirp, warble, speed-up, siren, whooping and several more.  More...

MSS5M0 IEC60601-1-8 Medical AlarmMSS5M0 IEC60601-1-8 Medical Alarm - Mallory Sonalert’s part number MSS5M0 is an addition to Mallory’s IEC60601-1-8 medical alarm series. Rated 4.5 to 5.5 VDC, this alarm emits an 85 dB at 10 cm continuous sound which contains a fundamental frequency of 975 Hz and four harmonic frequencies as required by IEC60601-1-8. Part number MSS5M0 has a compact 23 mm x 13 mm package size and is PC board mountable with 2 pc pins.  More...

Product Guides

22 mm Panel Mount Chimes, Warbles, & Sirens
22 mm Panel Mount Continuous & Pulsing Mode
22 mm Panel Mount Distinctive Tones
22 mm Panel Mount Multi-Tones (4 Tones)
30 mm Panel Mount Flat Blade Models
Back-up Alarms
Board Mount Buzzers
Hazardous Location/Intrinsically Safe Alarms (Class I Div II)
IEC60601-1-8 Medical Speaker Assembly
Industrial Controls/Panel Boxes Market Guide
Loud / Low Voltage Board Mount Buzzers
Miniature Speaker Models
MSS5M1 IEC60601-1-8 Alarm
NEMA and CuL Qualified Alarms
Panel Alarm Accessories
Product Line Card
Speaker Horns and Loudspeakers
Surface Mount Buzzers
X-Loud / Low Voltage Board Mount Buzzers
Market Guides
Back-Up Alarm Applications
Hazardous Location/Intrinsically Safe Applications
Industrial Controls/Panel Box
Medical Applications
Surface Transportation Applications

Solutions SCE Series
Chime, Warble, and Siren Alarms
Continuous Tone Alarms
Distinctive Pulsing Alarms
Distinctive Timing Alarms
Multi-Tone Alarms
Pulsing Tone Alarms

Solutions SCL Series
Ultra Low Power Alarms

Product Information

5 Things You Need to Know to Specify Audible Alarms
Alarms for Aerospace Applications
Alarms for Back-Up Applications
Alarms for Hazardous Location/Intrinsically Safe Applications
Alarms for Industrial Controls/Panel Box
Alarms for Medical Applications
Alarms for Transportation Applications
Audible Alarm Basics
Beeps, Bongs, and Buzzers - Which Alarm?
Circuit to Increase Turn-on Voltage
Controlling Sound Level Electronically
Controlling Sound Level Mechanically
Controlling Sound Level with Potentiometers
Decibel Sound Level Scale
Double Unit Warblers (SC628W, etc.)
Environmental Tests
External Drive Transducer Circuits
Fundamental Frequency and Harmonics
How Loud is Loud?
MSS5M1 Control Circuitry
Piezoelectric Alarm Operation
SCE Series Multi-Tone Control Diagram
Self-Drive Transducer Circuits
Tube & Tape-n-Reel Counts
Typical Failure Modes

Part Numbering Information

Part Number Schemes
Board Mount Indicator Series
Board Mount Transducer Series
MSR MSO Series
SC LSC SBM SNP VSB Series
SCE Series
Mallory Sonalert Products
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