| Image | Part Number | Manufacturer | Description |
|---|---|---|---|
 | BS2620PH-24-C | International Components | Audio Buzzer 20VDC 28VDC 20mA 24VDC 75dB 350Hz to 450Hz Through Hole Pin |
 | AT-1740-TT-R | Projects Unlimited | AUDIO PIEZO TRANSDUCER 1-30V TH |
| SC616NPR |
| Mallory Sonalert |
| Panel Mount Piezo Alarm, 16V DC, 22mA, 2.9kHz |
 | WP-23502-P07 | Knowles | Omnidirectional Electret Condenser Microphone 1.3V 50uA 4.4kR |
 | PT-3529FPQ | Mallory Sonalert | 3-Pin Piezo Indicator, 90dBA, 3VDC to 28VDC, -20°C to 70°C |
 | AB1548B | Projects Unlimited | 15mm Diameter Piezo Element, 20V, 70°C, Lead Free |
 | MR-28406-000 | Knowles | MICROPHONE COND ANALOG OMNI |
 | PS1240P02CT3 | TDK | Audio Buzzer Piezo 30Vo-p 3Vo-p 60dBA Through Hole Pin Ammo |
 | SD160701 | TDK | 16mm Round Audio Indicator, 4.1kHz, 1-5V, 60mA, Through Hole |
 | PT-4175WQ | Mallory Sonalert | Audio Indicator Piezo-External Drive 30Vp-p 1.5mA 5Vp-p 87dBA 500Hz to 1000Hz Flange Mount Wire Lead Bulk |
 | ZA120LASR8 | Mallory Sonalert | 22 mm panel mount, Fast Siren, 48-120 VAC/DC |
 | AB2720B | Projects Unlimited | BUZZER ELEMENT PIEZO 2KHZ 27MM |
 | SCE120LA3CTB | Mallory Sonalert | Audio Indicator Piezo 48VDC/48VAC 120VDC/120VAC 20mA 85dBA 2400Hz to 3400Hz Panel Mount Screw Bulk |
 | SC616PU-1 | Mallory Sonalert | 16V DC Rated Panel Mount Piezoelectric Buzzer |
 | SCH628DR | Mallory Sonalert | 6V DC Rated Voltage, 18mA Current Rating, Flush Mount, IP66 |
 | SC628D-1 | Mallory Sonalert | 6V DC Panel Mount Buzzer, 18mA, 65°C |
 | AS04008PR-WR-R | Projects Unlimited | General Purpose Round Speaker, 40mm Diameter, 6.55mm Depth, 800mW Power, Water Resistant |
 | MSO320SR | Mallory Sonalert | Audio Indicators & Alerts CONSTANT, 3-20VDC OCTAGON + SEALED |
 | AT-2460-TWT-R | Projects Unlimited | 24mm Round Audio Component, 10V, 8mA, Through Hole Mount, -30°C to 85°C |
 | AT-1830-TT-R | Projects Unlimited | 18mm Depth, 10V, 3.5mA, Through Hole Mount Audio Component |
