| Image | Part Number | Manufacturer | Description |
|---|---|---|---|
 | AT-2440-TWT-R | Projects Unlimited | AUDIO PIEZO TRANSDUCER 1-30V TH |
 | SC628CPNR | Mallory Sonalert | Audio Indicator 6VDC 28VDC 16mA 84dBA 2400Hz to 3400Hz Panel Mount Screw Bulk |
 | PKLCS1212E2000-R1 | Murata | Piezo Buzzer 2kHz 3-25V 70dB SM T/R |
| SC628J | Mallory Sonalert | AUDIO PIEZO IND 6-28V PNL MNT | |
 | KCG0601 | Kingstate | Audio Transducer Magnetic 1Vo-p 1.7Vo-p 80mA 1.5Vo-p 70dB Through Hole Pin |
 | SMT-0825-S-2-R | Projects Unlimited | AUDIO MAGNETIC XDCR 2.5-4.5V SMD |
 | POM-3542P-R | Projects Unlimited | MIC COND ANALOG OMNI -42DB |
 | 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 |
 | SC628NR | Mallory Sonalert | Audio Indicator Piezo 6VDC 28VDC 16mA 80dBA 2400Hz to 3400Hz Panel Mount Screw Bulk |
 | SC110PR | Mallory Sonalert | Audio Indicator Piezo 30VDC/30VAC 120VDC/120VAC 19mA 68dBA 2600Hz to 3200Hz Panel Mount Screw Bulk |
 | AI-3035-TWT-3V-R | Projects Unlimited | 30mm Piezo Indicator, 2-5V DC, 3.5kHz, Tin Plated |
 | ADMP504ACEZ-RL | Analog Devices | MEMS Microphones Ultralow Noise Mic W/Bottom Port & Analo |
| 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 |
 | TOM-1545P-R | Projects Unlimited | MEMS Mic, Analog, Omni, 2kΩ, 4mm, 1.5mm, 2V |
| SC616NL | Mallory Sonalert | AUDIO PIEZO IND 6-16V PNL MNT | |
 | SC110NR | Mallory Sonalert | Audio Indicator Piezo 30VDC/30VAC 120VDC/120VAC 24mA 80dBA 2400Hz to 3400Hz Panel Mount Screw Bulk |
| PK-20N38WQ | Mallory Sonalert | MALLORY PK-20N38WQ TRANSDUCER, PIEZO, 3.8KHZ, 85DB, 28VDC | |
| AI-2604-TF-LW115-12V-R | Projects Unlimited | Audio Indicators & Alerts 89 dBA 12VDC 400 Hz |
