| Image | Part Number | Manufacturer | Description |
|---|---|---|---|
 | PK-20A38PQ | Mallory Sonalert | Piezo Buzzer 12VDC 15mA 3.8kHz Through Hole Audio Indicator |
| AST200Q | Mallory Sonalert | Audio Indicator Piezo 2Vp-p 4Vp-p 80mA 3Vp-p 85dBA Surface Mount Solder Pad Tube | |
 | AI-2304-TT-24V-2-R | Projects Unlimited | Audio Indicators & Alerts 24VDC 30MA 85DBA 400HZ |
| PK-35N29WQ | Mallory Sonalert | MALLORY PK-35N29WQ TRANSDUCER, PIEZO, 2.9KHZ, 90DBA, 28VDC | |
 | AT-1228-TT-R | Projects Unlimited | AUDIO MAGNETIC XDCR 1-1.7V TH |
 | PB-12N23P-12Q | Mallory Sonalert | Audio Indicator Piezo 9VDC 15VDC 50mA 12VDC 85dBA 1900Hz to 2700Hz Through Hole Pin Tube |
 | AW-10FR-NSVC | Projects Unlimited | SIREN PIEZO INDICATOR 9-28V CHAS |
 | PKM17EWH4000 | Murata | Audio Sounder Piezo 25Vp-p 3Vp-p 75dB Wire Lead Bulk |
| SC628D | Mallory Sonalert | AUDIO PIEZO IND 6-28V PNL MNT | |
| PB-1220PQ | Mallory Sonalert | AUDIO MAGNETIC XDCR 1.25-2.5V TH | |
| SC628DJR | Mallory Sonalert | Audio Indicator Piezo 6VDC 28VDC 23mA 60dBA 1600Hz to 2200Hz Panel Mount Screw Bulk | |
| SMT-1427-S-4-R | Projects Unlimited | AUDIO MAGNETIC XDCR 4-7V SMD | |
| AI-2604-TF-LW115-24V-R | Projects Unlimited | 24VDC 25mA 400Hz Audio Indicator, 26mm Diameter, Wire Lead | |
 | SMT-0827-S-2-R | Projects Unlimited | SMD Magnetic Transducer, 2.7kHz, 3.6V, 15R, 90mA |
 | AT-2830-TWT-R | Projects Unlimited | Audio Piezo Transducer, 3-28V, 3kHz, 8mA, Thru Hole |
| MAS806Q | Mallory Sonalert | AUDIO PIEZO INDICATOR 6-14V TH | |
 | PKLCS1212E2400-R1 | Murata | PK Series 12 mm 2.4 kHz 75 dB External Drive Surface Mount Piezoelectric Sounder |
 | SC616N | Mallory Sonalert | Audio Indicator Piezo 6VDC 16VDC 22mA 80dBA 2400Hz to 3400Hz Panel Mount Screw Bulk |
| MSO320R | Mallory Sonalert | PIEZO | |
| PT-2725FPQ | Mallory Sonalert | BUZZER PIEZO 2.5KHZ 30MM PCB |
