| Image | Part Number | Manufacturer | Description |
|---|---|---|---|
 | POW-1644P-B-R | Projects Unlimited | MEMS Microphone, Omnidirectional, 2V, 2.2kR, Analog Output |
 | SC110MN | Mallory Sonalert | TRANSDUCER, PIEZO, 2.9KHZ, 90DBA, 120VAC |
 | MAS800Q | Mallory Sonalert | Piezo Buzzer 9-12VDC 50mA 2.7kHz 103dBA Radial Through Hole |
 | AOM-4546L-R | Projects Unlimited | PROJECTS UNLIMITED AOM-4546L-R MICROPHONE, OMNI LEADS, 9.7MM |
| SCE120MA3CTB | Mallory Sonalert | AUDIO PIEZO IND 48-120V PNL MNT | |
 | SC110D | Mallory Sonalert | AUDIO PIEZO IND 30-120V PNL MNT |
| PK-20A38WQ | Mallory Sonalert | TRANSDUCER, PIEZO, 3.8KHZ, 95DBA, 24VDC | |
 | AST-030C0MR-R | Projects Unlimited | SPEAKER 100OHM 150MW TOP PORT |
| POM-2246L-C33-R | Projects Unlimited | MIC COND ANALOG OMNI -46DB 6MM D | |
 | PT-2745WQ | Mallory Sonalert | Audio Indicators & Alerts XDUCR, PIEZO, 4.5KHZ 90DB, FLANGE, 30X5 |
 | SC307NR | Mallory Sonalert | Audio Indicator Piezo 3VDC 7VDC 12mA 80dBA 2400Hz to 3400Hz Panel Mount Screw Bulk |
 | AVW-15SBR-AL-24 | Projects Unlimited | SIREN PIEZO IND 18-28V BASE |
 | AT-5210-TT-R | Projects Unlimited | Speakers & Transducers 18VP-P 120000PF 105DBA |
| AW-30SBR | Projects Unlimited | SIREN PIEZO INDICATOR 9-28V BASE | |
 | PF-21A31PQ | Mallory Sonalert | Audio Indicators & Alerts FAST PULSE, 4-24VDC 3KHZ, 85DB, 24X14MM |
 | PKB24SWH3301 | Murata | BUZZER PIEZO 12V 24MM CHASSIS |
 | PNM-2751L-R | Projects Unlimited | MIC COND ANALOG NC -51DB 6MM D |
 | SMS-1508-2-R | Projects Unlimited | SPEAKER 8OHM 300MW TOP PORT 87DB |
| SC628W | Mallory Sonalert | Audio Indicator Piezo 6VDC 28VDC 16mA 68dBA 2400Hz to 3400Hz Panel Mount Screw Bulk | |
| POM-5238L-R | Projects Unlimited | PROJECTS UNLIMITED POM-5238L-R MICROPHONE, OMNI LEADS, 6MM |
