| Image | Part Number | Manufacturer | Description |
|---|---|---|---|
| AI-4228-P-SP250 | Projects Unlimited | Audio Indicators & Alerts 220VAC 2800Hz 94dBA | |
| GT-1515RP3 | Soberton | AUDIO MAGNETIC XDCR 1-2V TH | |
 | PSR-40N08A05-JQ | Mallory Sonalert | Speakers Ferrite 500±20%Hz 0.5W 89±3dBA 8Ohm Round |
 | 7BB-27-4C | Murata | Audio Indicators & Alerts 18.0nF +/-30% 4.6kHz +/-0.5%kHz |
 | GT-12QP-3 | Soberton | AUDIO MAGNETIC XDCR 1-2V TH |
| AT-101Z | Projects Unlimited | TRANSDUCER, E/M, ALARM, 2.048KHZ, 73DBA | |
| 7NB-41-1 | Murata | Audio Indicators & Alerts Audio Indicators/ Alerts | |
 | SMT-733-2 | Projects Unlimited | Speakers & Transducers 90dB 2700Hz 3.6Vpp |
 | ST-03AH | Soberton | AUDIO MAGNETIC XDCR 1-2V SMD |
| AI-4228-P-C120 | Projects Unlimited | Audio Indicators & Alerts 110VDC 2800hz 94dBA | |
| GT-1515RP2 | Soberton | AUDIO MAGNETIC XDCR 1-2V TH | |
| AI-195 | Projects Unlimited | Audio Indicators & Alerts EM 85dB 2200Hz 12VDC | |
 | AT-531 | Projects Unlimited | Speakers & Transducers PZ RA PCMNT 3200H |
| PS1740P02 | TDK | AUDIO PIEZO TRANSDUCER 30V TH | |
 | AI-550 | Projects Unlimited | Audio Indicators & Alerts PZ 90dB 2900Hz 12VDC |
 | PSR-20F08S-JQ | Mallory Sonalert | Speakers Ferrite 1300 ± 20%Hz 0.3W 80±3dBA 8Ohm Round |
 | AT-22 | Projects Unlimited | Speakers & Transducers 90 dBA 12Vpp 2800Hz |
 | AI-750S | Projects Unlimited | Audio Indicators & Alerts 90 dBA 12VDC 3600Hz |
 | SMT-12 | Projects Unlimited | Speakers & Transducers 6.5mm 2400Hz SMT |
 | SMT-11 | Projects Unlimited | Speakers & Transducers |