| Image | Part Number | Manufacturer | Description |
|---|---|---|---|
 | SC110NJ | Mallory Sonalert | AUDIO PIEZO IND 30-120V PNL MNT |
| SMT-0827-TW-5V-R | Projects Unlimited | Speakers & Transducers SMD TRANSDUCER 5VP-P 60MA | |
| AW-15SBR | Projects Unlimited | Piezo Buzzers & Audio Indicators SIREN, 12VDC, RED, 32 TONE, IP54 | |
| TNM-3054L-R | Projects Unlimited | MIC COND ANALOG NC -54DB 4.5MM D | |
 | SC648DR | Mallory Sonalert | Audio Indicator 10VDC 48VDC 20mA 60dBA 1600Hz to 2200Hz Panel Mount Screw Bulk |
 | EA-21842-000 | Knowles | Microphones 5.56 X 3.98 X 2.21MM -59 SENS, 12S PORT |
 | AOW-4542P-B-R | Projects Unlimited | Microphones -42DB 1.5VDC .5MA 2.2 KOHM |
 | AT-1031-TT-R | Projects Unlimited | AUDIO MAGNETIC XDCR 1-3V TH |
 | SC110EPR | Mallory Sonalert | TRANSDUCER, PIEZO, 1.9KHZ, 78DBA, 120V |
 | POM-5238P-R | Projects Unlimited | PROJECTS UNLIMITED - POM-5238P-R - MICROPHONE, OMNI PCB, 6MM |
| SNP428 | Mallory Sonalert | AUDIO PIEZO IND 4-28V PNL MNT | |
 | PB-1621PQ | Mallory Sonalert | Speakers & Transducers XDUCR, 4-7VPP 2048HZ, SEALED |
 | SC110 | Mallory Sonalert | AUDIO PIEZO IND 30-120V PNL MNT |
 | ZA028LDSP1 | Mallory Sonalert | TRANSDUCER, ALARM, 95DBA, 28V, PANEL |
 | SC250 | Mallory Sonalert | Audio Indicator Piezo 60VDC/60VAC 250VDC/250VAC 18mA 68dBA 2400Hz to 3400Hz Panel Mount Screw Bulk |
 | AOW-4544L-C3310-B-R | Projects Unlimited | Microphones -44DB 2VDC .5MA 2.2KOHM |
 | AOM-6742P-2-R | Projects Unlimited | MIC COND ANALOG OMNI -42DB |
 | PK-21N31PQ | Mallory Sonalert | Audio Indicator Piezo 1.5VDC 30VDC 12mA 12VDC 80dBA 2000Hz to 3000Hz Through Hole Pin Bulk |
| AOW-4544P-C3310-B-R | Projects Unlimited | Mic Omni-Directional 2200Ohm -44±3dB 10Vdc Round Pin | |
 | 7BB-27-4L0 | Murata | MURATA 7BB-27-4L0 PIEZO SOUNDER |
