| Image | Part Number | Manufacturer | Description |
|---|---|---|---|
| PK-27A35ERQ | Mallory Sonalert | Audio Indicators & Alerts CONSTANT, 3-24VDC 3.5KHZ, 95DB, 37X24 | |
 | KPEG680S | Kingstate | Audio Indicator Piezo 6VDC 15VDC 90mA 86dB 1500Hz to 2500Hz/2300Hz to 3300Hz Panel Mount Solder Lug Box |
| INMP411ACEZ-R7 |
| TDK |
| INVENSENSE INMP411ACEZ-R7 MICROPHONE, 131DB, -46DBV, SMD |
| AST501Q | Mallory Sonalert | AUDIO MAGNETIC XDCR 1-2V SMD |
| PT-2060WQ | Mallory Sonalert | Audio Indicators & Alerts XDUCR, PIEZO, 6KHZ 90DB, FLANGE, 24X5 |
 | SC648AJR | Mallory Sonalert | Audio Indicator 10VDC 48VDC 20mA 68dBA 2400Hz to 3400Hz Panel Mount Screw Bulk |
 | 63S1120 | CUI | AUDIO PIEZO INDICATOR 9-15V CHAS |
 | EK-23132-000 | Knowles | MICROPHONE COND ANALOG OMNI |
 | CEP-1109 | CUI | AUDIO PIEZO TRANSDUCER 30V SMD |
 | WP-23501-000 | Knowles | MIC COND ANALOG NOISE CAN -54DB |
| SC628AEP | Mallory Sonalert | Audio Indicator Piezo 6VAC 28VAC 16mA 57dBA/72dBA 1500Hz to 2500Hz Panel Mount Screw Bulk |
 | EM-23069-000 | Knowles | Microphones Omni-Directional Microphone |
 | BL-21785-000 | Knowles | MICROPHONE PIEZO ANALOG OMNI |
 | SMT-0540-T-6-R | Projects Unlimited | AUDIO MAGNETIC XDCR 2-4V SMD |
| ZA028SDCT | Mallory Sonalert | TRANSDUCER, ALARM, 85DBA, 28V, PANEL |
 | SC250JR | Mallory Sonalert | MALLORY SC250JR TRANSDUCER, PIEZO, 2.9KHZ, 78DBA, 250V |
| SCH110R | Mallory Sonalert | AUDIO PIEZO IND 30-120V PNL MNT |
 | PK-27A25WQ | Mallory Sonalert | AUDIO PIEZO INDICATOR 3-24V CHAS |
| SC628DP | Mallory Sonalert | AUDIO PIEZO IND 6-28V PNL MNT |
| ZA120SACT | Mallory Sonalert | MALLORY ZA120SACT TRANSDUCER, ALARM, 75DBA, 120V, PANEL |
