| Image | Part Number | Manufacturer | Description |
|---|---|---|---|
 | AI-4228-TF-SP-LW145-R | Projects Unlimited | AUDIO PIEZO INDICATOR 3-20V CHAS |
| MCP320B2Q | Mallory Sonalert | AUDIO PIEZO INDICATOR 3-20V TH | |
| AT-1820-TWT-6V-R | Projects Unlimited | Speakers & Transducers 85 dBA 6Vpp 2100Hz | |
| AI-2331-TWT-2-R | Projects Unlimited | Audio Indicators & Alerts 85 dBA 12VDC 3200Hz | |
 | MCP320Q | Mallory Sonalert | Piezo Indicator, Radial, 3.15kHz, 12VDC, 25mA |
 | MSR516NJR | Mallory Sonalert | Audio Indicator Piezo 5VDC 16VDC 12mA 88dBA/96dBA 3200Hz to 4200Hz Through Hole Pin Bulk/Tray |
 | AI-1027-TWT-5V-R | Projects Unlimited | 5V DC Audio Indicator, 2.7kHz, 80dBA, Through Hole |
| SMT-1427-S-R | Projects Unlimited | AUDIO MAGNETIC XDCR 3-7V SMD | |
 | AI-3039-TWT-12V-R | Projects Unlimited | Audio Indicator Piezo 3VDC 24VDC 15mA 12VDC 100dBAdBA 3400Hz to 4400Hz Through Hole Pin |
 | PT-2735FPLQ | Mallory Sonalert | PT Series 88 dB 3.5 kHz 12 V 10 mA Panel Mount Circular Buzzer |
 | SMT-0540-S-R | Projects Unlimited | SMD Magnetic Transducer 2-4V 4kHz 100mA |
 | PKLCS1212E4001-R1 | Murata | Piezo Buzzer 4kHz 25V Surface Mount Solder Tape/Reel |
| AT-1740-TT-3-R | Projects Unlimited | AUDIO PIEZO TRANSDUCER 1-30V TH | |
| AT-1820-TWT-1V-R | Projects Unlimited | Speakers & Transducers EM 80dB 2250H 1.5Vpp | |
 | AI-3018-TWT-R | Projects Unlimited | Audio Indicator Indicator Piezo 12Vdc 18mA Pin 3Vdc 1300Hz to 2300Hz Through Hole |
 | PT-1240PQ | Mallory Sonalert | Transducer, Mounted Piezo, 4100 Sound Freq. ( Hz) 3.0-20 V , 80 Db At 10CM, |
| AI-4230-S-C24-R | Projects Unlimited | Audio Indicators & Alerts 95dBA 2900Hz 24Vdc | |
 | SC628ANR | Mallory Sonalert | Piezo Buzzer 6-28VDC/VAC, 2.9kHz, 80dBA, Panel Mount Screw |
 | PB-12N23P-05Q | Mallory Sonalert | Piezo Buzzer 4-7VDC 30mA 2.3kHz 85dBA Through Hole |
 | AI-1433-TWT-R | Projects Unlimited | Audio Indicators & Alerts 12VDC 7MA 80DBA |
