| Image | Part Number | Manufacturer | Description |
|---|---|---|---|
 | PK-35N29WQ | Mallory Sonalert | MALLORY PK-35N29WQ TRANSDUCER, PIEZO, 2.9KHZ, 90DBA, 28VDC |
 | AW-10FR-NSVC | Projects Unlimited | SIREN PIEZO INDICATOR 9-28V CHAS |
| PKM17EWH4000 |
| Murata |
| Audio Sounder Piezo 25Vp-p 3Vp-p 75dB Wire Lead Bulk |
 | PB-12N23P-12Q | Mallory Sonalert | Audio Indicator Piezo 9VDC 15VDC 50mA 12VDC 85dBA 1900Hz to 2700Hz Through Hole Pin Tube |
 | PKLCS1212E2400-R1 | Murata | PK Series 12 mm 2.4 kHz 75 dB External Drive Surface Mount Piezoelectric Sounder |
 | AT-2830-TWT-R | Projects Unlimited | Audio Piezo Transducer, 3-28V, 3kHz, 8mA, Thru Hole |
 | SC628D | Mallory Sonalert | AUDIO PIEZO IND 6-28V PNL MNT |
 | SC616N | Mallory Sonalert | Audio Indicator Piezo 6VDC 16VDC 22mA 80dBA 2400Hz to 3400Hz Panel Mount Screw Bulk |
 | MAS806Q | Mallory Sonalert | AUDIO PIEZO INDICATOR 6-14V TH |
 | SC628DJR | Mallory Sonalert | Audio Indicator Piezo 6VDC 28VDC 23mA 60dBA 1600Hz to 2200Hz Panel Mount Screw Bulk |
 | PB-1220PQ | Mallory Sonalert | AUDIO MAGNETIC XDCR 1.25-2.5V TH |
 | SMT-1427-S-4-R | Projects Unlimited | AUDIO MAGNETIC XDCR 4-7V SMD |
 | SMT-0827-S-2-R | Projects Unlimited | SMD Magnetic Transducer, 2.7kHz, 3.6V, 15R, 90mA |
| AI-2604-TF-LW115-24V-R | Projects Unlimited | 24VDC 25mA 400Hz Audio Indicator, 26mm Diameter, Wire Lead |
 | ZA120LADT8 | Mallory Sonalert | 22 mm panel mount, Slow Warble, 48-120 VAC/DC |
 | AOM-4540P-R | Projects Unlimited | PROJECTS UNLIMITED AOM-4540P-R MICROPHONE, OMNI PCB, 9.7MM |
 | AOM-4544P-NF-R | Projects Unlimited | Microphones 2.2kOhm x 9.7mm |
 | SC628R | Mallory Sonalert | Audio Indicator Piezo 6VDC 28VDC 18mA 68dBA 2400Hz to 3400Hz Panel Mount Screw Bulk |
 | LSC628AN | Mallory Sonalert | Audio Indicator Piezo 6VDC/6VAC 28VDC/28VAC 65mA 90dBA 2400Hz to 3400Hz Panel Mount Screw Bulk |
 | SMT-1427-T-R | Projects Unlimited | AUDIO MAGNETIC XDCR 3-7V SMD |
