| Image | Part Number | Manufacturer | Description |
|---|---|---|---|
 | AI-3135-TF-LW100-R | Projects Unlimited | Audio Indicators & Alerts 9VDC 8MA 105DBA 3500HZ |
 | AT-2336-TWT-R | Projects Unlimited | Speakers & Transducers 12VP-P 8MA 11000PF |
| SC628H | Mallory Sonalert | AUDIO PIEZO IND 6-28V PNL MNT | |
| LSC616N | Mallory Sonalert | AUDIO PIEZO IND 6-16V PNL MNT | |
 | AT-2440-TWT-R | Projects Unlimited | AUDIO PIEZO TRANSDUCER 1-30V TH |
| SC628J | Mallory Sonalert | AUDIO PIEZO IND 6-28V PNL MNT | |
 | SMT-0825-S-2-R | Projects Unlimited | AUDIO MAGNETIC XDCR 2.5-4.5V SMD |
 | ZA028LACM1 | Mallory Sonalert | 22 mm panel mount, Chime Tone, 16-28 VAC/DC |
 | AI-1223-TWT-5V-2-R | Projects Unlimited | 5V DC Audio Indicator, 2.3kHz, 30mA, Through Hole |
 | AI-3035-TWT-3V-R | Projects Unlimited | 30mm Piezo Indicator, 2-5V DC, 3.5kHz, Tin Plated |
| MSR516NPR | Mallory Sonalert | AUDIO PIEZO INDICATOR 5-16V TH | |
 | AI-3238-TF-LW140-R | Projects Unlimited | 12VDC Audio Indicator, 3.8kHz, 10mA, Wire Lead Mount |
| SC616NL | Mallory Sonalert | AUDIO PIEZO IND 6-16V PNL MNT | |
| AI-2604-TF-LW115-12V-R | Projects Unlimited | Audio Indicators & Alerts 89 dBA 12VDC 400 Hz | |
 | 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 |
