| Image | Part Number | Manufacturer | Description |
|---|---|---|---|
| GT12QP9 | Soberton | AUDIO MAGNETIC XDCR 1-2V TH | |
 | AI-4228-P-FP120 | Projects Unlimited | Audio Indicators & Alerts 110VAC 2800Hz 92dBA |
 | AT-138 | Projects Unlimited | Speakers & Transducers PZ 90dB 2800Hz 12Vpp |
 | AT-12 | Projects Unlimited | Speakers & Transducers PZ 85dB 5500Hz 15Vpp |
| PKM22EPPH4012-B0 | Murata | 22mm Dynamic Speaker, 4kHz, Through Hole, PC Pins, 1.5V | |
| AI-4228-P-SP28D | Projects Unlimited | Audio Indicators & Alerts 12VDC 2800Hz 90dBA | |
 | AT-152 | Projects Unlimited | Speakers & Transducers PZ 80dB 4000H 15Vpp |
| SMT-9403D | Projects Unlimited | Speakers & Transducers EM 87DB 2700H 3.6Vpp | |
| AI-400 | Projects Unlimited | Audio Indicators & Alerts PZ 99dBA 2800Hz 12DC | |
| PKM17EPPH4002-B0 | Murata | Audio Indicators & Alerts 3Vp-p,4kHz square wave,10cm | |
 | 7BB-15-6 | Murata | Piezo element, 7BB-15-6, Murata |
 | 7BB-20-3 | Murata | Piezo Speaker 3.6kHz 20mm 20nF 500R |
| AI-431 | Projects Unlimited | Audio Indicators & Alerts PZ 105dB 2800Hz 12DC | |
 | SMT-916 | Projects Unlimited | Speakers & Transducers EM 95dB 2730Hz 3Vpp |
| PB-1408-2 | Soberton | AUDIO PIEZO INDICATOR 3-16V TH | |
| PB-09C27PE-01AQ | Mallory Sonalert | Speakers & Transducers XDUCR, 1.25-2VPP 2731HZ, 10.5X4MM | |
| PSR-45N08A-JQ | Mallory Sonalert | Speakers Ferrite 400±20%Hz 0.3W 88±3dBA 8Ohm Round | |
 | AI-550H | Projects Unlimited | Audio Indicators & Alerts PZ 95dB 2900Hz 12VDC |
 | 7BB-41-2L0 | Murata | Audio Indicators & Alerts 2.2KHz 41mm Ext Dr |
| SMT-9403A | Projects Unlimited | Speakers & Transducers 87dBA 3.6Vpp 2100Hz |
