| Image | Part Number | Manufacturer | Description |
|---|---|---|---|
 | SC110HPR | Mallory Sonalert | 43mm 120V Panel Mount Horn, 20mA, 65°C |
 | AI-2604-TF-LW115-12V-R | Projects Unlimited | 12V 50mA DC Panel Mount Audio Component |
| SC110DPR |
| Mallory Sonalert |
| Audio Indicator Piezo 30VDC/30VAC 120VDC/120VAC 20mA 60dBA 1600Hz to 2200Hz Panel Mount Screw Bulk |
 | PK-20A38WQ | Mallory Sonalert | 12V DC Rated Panel Mount Buzzer, 12mA, 23mm Diameter, 70°C |
 | PK-21A29PQ | Mallory Sonalert | 12V 18mA DC Input LED Indicator, Flush Mount, 24mm Diameter, 70°C |
 | PKM22EPPH4002-B0 | Murata | Audio Sounder Piezo 25Vp-p 3Vp-p 75dBA Pin Through Hole Bulk |
 | SCE120MA3CTB | Mallory Sonalert | AUDIO PIEZO IND 48-120V PNL MNT |
 | AT-1820-TWT-6V-R | Projects Unlimited | AT-1820-TWT-6V-R Rectifier, 6V, 40mA, Through Hole, -20°C to 80°C |
 | AI-4228-TF-LW140-4-R | Projects Unlimited | Piezo Audio Indicator, 3-28VDC, 2.8kHz, 95dB, Wire Lead |
 | AI-4328-P-C28-R | Projects Unlimited | Piezo Transducer, 2.8kHz, 28VDC, 97dBA, Panel Mount |
 | POM-3546P-R | Projects Unlimited | Omnidirectional MEMS Microphone, 2V, 500uA, 2.2kR, PCB Mount |
 | MAS806SQ | Mallory Sonalert | 12V DC 50mA Through Hole Audio Indicator |
 | AI-2304-TF-LW120-12V-R | Projects Unlimited | 12V 30mA DC Input Panel Mount Transformer |
 | PKM13EPYH4002-B0 | Murata | 12.6mm Diameter Piezo Speaker, 3V Nominal Input, 30V DC Rated, Through Hole Mount |
 | PUM-5250L-R | Projects Unlimited | 2V 500uA Unidirectional Analog Microphone |
 | SC250 | Mallory Sonalert | 42.85mm Diameter Piezo Alarm, 60-250V, 18mA, -30°C to 65°C |
 | MCP320B2Q | Mallory Sonalert | 12V 20mA Radial Through Hole Audio Component |
 | POM-5238P-R | Projects Unlimited | PROJECTS UNLIMITED - POM-5238P-R - MICROPHONE, OMNI PCB, 6MM |
 | SC628JU-1 | Mallory Sonalert | Black DC-Operated Buzzer, 27mA, 6-28V, Panel Mount, -30 to 65°C |
 | AI-4328-P-FP250-R | Projects Unlimited | 220V 16mA Panel Mount Audio Component |
