| Image | Part Number | Manufacturer | Description |
|---|---|---|---|
 | FG-23652-D65 | Knowles | Analog MEMS Microphone, Omnidirectional, 10kHz, 4.4kR, 1.3V |
 | SC628W | Mallory Sonalert | Panel Mount Piezo Alarm, 16mA, 28V, 65°C |
 |
| INMP621ACEZ-R7 |
| TDK |
| MEMS Microphone, Omnidirectional, LGA, -40 to 85°C |
 | SC628D | Mallory Sonalert | Black DC Panel Mount Buzzer, 1.9kHz, 28V, 18mA, 65°C |
 | POM-3042P-R | Projects Unlimited | 2V 500uA Analog Output PCB Mount MEMS Microphone |
 | AI-4429-P-C12-R | Projects Unlimited | 12Vdc Audio Indicator, 2.9kHz, 105dBA, Panel Mount, Screw Term |
 | ADMP441ACEZ-RL7 | Analog Devices | MEMS Microphone, Omnidirectional, LGA, 1.8-3.3V, 61dB SNR |
 | ZA016LDSU2 | Mallory Sonalert | 16V 40mA DC Input Panel Mount Zener Diode |
 | PT-2130FPQ | Mallory Sonalert | PT-2130FPQ 12V 12mA Through Hole Capacitor |
 | AW-10PR-NSVC | Projects Unlimited | 12V 15mA DC Power Switch, Flush Mount, 50mm x 50mm |
 | EA-21842-C36 | Knowles | 1.3V 1.3mm Rectangular Electret Condenser Microphone |
 | SC616NLR | Mallory Sonalert | Black LED, 16V, 22mA, Panel Mount, 65°C |
 | AI-4028-P-SP32-R | Projects Unlimited | 12V DC Panel Mount Audio Component |
 | AI-4033-TWT-R | Projects Unlimited | 8mA DC Input Through Hole Audio Component |
 | ZA120LASU2 | Mallory Sonalert | Audio Indicators & Alerts FAST SPEED UP 85-95 dB 48-120 V |
 | SC628AR | Mallory Sonalert | Audio Indicator Piezo 6VDC/6VAC 28VDC/28VAC 16mA 68dBA 2400Hz to 3400Hz Panel Mount Screw Bulk |
 | AT-1228-TT-R | Projects Unlimited | Through Hole 1.5V 40mA Audio Component |
 | AOM-4546L-R | Projects Unlimited | PROJECTS UNLIMITED AOM-4546L-R MICROPHONE, OMNI LEADS, 9.7MM |
 | ADMP421BCEZ-RL7 | Analog Devices | MEMS Mic, Omnidirectional, 3.3V, 61dB SNR, LGA, SMD |
 | AW-15SBW | Projects Unlimited | 24V 33mA DC Power Supply Unit, Flush Mount, IP54 |
