| Image | Part Number | Manufacturer | Description |
|---|---|---|---|
 | ZA028MDCM1 | Mallory Sonalert | Audio Indicators & Alerts 16 to 28 VDC 3300 +/- 500 Hz |
 | ZA028LDSR8 | Mallory Sonalert | 22 mm panel mount, Fast Siren, 16-28 VDC |
 | PB-0627PE-05AQ | Mallory Sonalert | Speakers & Transducers XDUCR, 4-5VPP 2731HZ, 6.6X3.1MM |
 | AVW-15SBR-RL-24 | Projects Unlimited | SIREN PIEZO IND 18-28V BASE |
 | AS06608PS-WR-R | Projects Unlimited | 8 Ohm 4W Water Resistant Speaker, 95dB, 12kHz |
 | SC110JWR | Mallory Sonalert | TRANSDUCER, PIEZO, 2.8KHZ, 80DBA, 120V |
 | M2BJ-BH24E | Omron | AUDIO PIEZO IND 12-24V PNL MNT |
 | POW-2744P-B-R | Projects Unlimited | Microphones -44DB 2VDC .5MA 2.2KOHM |
 | PKM22EPPH2001-B0 | Murata | Audio Sounder Piezo 15Vo-p 1.5Vo-p 70dB Through Hole Pin Bulk |
| 14-810.002 | EOZ | EAO 14-810.002 BUZZER | |
 | AB2725S | Projects Unlimited | BUZZER ELEMENT PIEZO 2.5KHZ 27MM |
 | SC628AN | Mallory Sonalert | Audio Indicator Piezo 6VAC 28VAC 30mA 88dBA 2400Hz to 3400Hz Panel Mount Screw Bulk |
 | DUM-5246L-R | Projects Unlimited | PROJECTS UNLIMITED DUM-5246L-R MICROPHONE, UNI LEADS, 6MM |
 | SC110N | Mallory Sonalert | AUDIO PIEZO IND 30-120V PNL MNT |
 | PT-2038WQ | Mallory Sonalert | TRANSDUCER, BUZZER, 3.8KHZ, 90DBA, 30V |
| SC628MD | Mallory Sonalert | Audio Indicators & Alerts CONSTANT, 6-28VDC MIL/RUGGED, 1900HZ | |
 | SC648ADPR | Mallory Sonalert | Audio Indicators & Alerts FAST PULSE, 10-48V 1900HZ, SOFT |
| AST1109MLTRQ | Mallory Sonalert | AUDIO PIEZO TRANSDUCER 1-20V SMD | |
 | AT-2429-TWT-R | Projects Unlimited | Speakers & Transducers 12VP-P 8MA 70000PF |
 | SC110NP | Mallory Sonalert | Audio Indicator Piezo 30VDC/30VAC 120VDC/120VAC 24mA 80dBA 2400Hz to 3400Hz Panel Mount Screw Bulk |
