| Image | Part Number | Manufacturer | Description |
|---|---|---|---|
| ZA028MAMP1 | Mallory Sonalert | AUDIO PIEZO IND 16-28V PNL MNT | |
 | BRP2407P-30 | International Components | Audio Piezo 30Vp-p 10Vp-p 90dB 5000Hz to 6200Hz Through Hole Pin |
 |
| 7BB-15-6 |
| Murata |
| Piezo element, 7BB-15-6, Murata |
 | 7BB-20-3 | Murata | Piezo Speaker 3.6kHz 20mm 20nF 500R |
 | POM-2746P | Projects Unlimited | Microphones 2.2kOhm x 6mm |
 | FG-23742-D36 | Knowles | MICROPHONE COND ANALOG OMNI |
 | AI-400 | Projects Unlimited | Audio Indicators & Alerts PZ 99dBA 2800Hz 12DC |
 | SCE048MA3CTB | Mallory Sonalert | Audio Indicator Piezo 28VDC/28VAC 48VDC/48VAC 20mA 75dBA 2400Hz to 3400Hz Panel Mount Screw Bulk |
 | PL-27A35EPQ | Mallory Sonalert | Audio Indicator Piezo 3VDC 24VDC 15mA 12VDC 95dBA 3000Hz to 4000Hz Through Hole Pin Bulk |
 | AOM-4546P | Projects Unlimited | Microphones 2.2kOhm x 9.7mm |
 | ZA120MAMP1 | Mallory Sonalert | AUDIO PIEZO IND 48-120V PNL MNT |
 | SCH648AR | Mallory Sonalert | Audio Indicator Piezo 10VDC/10VAC 48VDC/48VAC 16mA 68dBA 2400Hz to 3400Hz Panel Mount Screw Bulk |
 | AB1560B | Projects Unlimited | BUZZER ELEMENT PIEZO 6KHZ 15MM |
 | POM-2738L | Projects Unlimited | Microphones 2.2kOhm x 6mm |
 | CUM-4537L | Projects Unlimited | Microphones 1.8kOhm x 9.7mm |
| POM-5246L | Projects Unlimited | Microphones 2.2kOhm x 6mm |
| PB-0927PD1AQ | Mallory Sonalert | AUDIO MAGNETIC XDCR 3-7V TH |
 | SCH628AR | Mallory Sonalert | Audio Indicators & Alerts CONSTANT, 6-28V MED, CLASS I DIV II |
 | FB-EM-30347-000 | Knowles | Microphones 3m Omni w/EK metal flex no conn 2wire |
 | POM-3046L | Projects Unlimited | Microphones 2.2kOhm x 6mm |
