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| PartNumber | CPE-121 | CPE-122 | CPE-120 |
| Description | Audio Indicators & Alerts 24 mm, 3~28 V, 83 dB, 4.5 kHz, Panel Mount w/Wire Leads, Piezo Audio Transducer Buzze | Audio Indicators & Alerts 24 mm, 30 V, 90 dB, 6.0 kHz, Through Hole, Piezo Audio Transducer Buzze | Speakers & Transducers 24 mm, 30 V, 88 dB, 5.0 kHz, Panel Mount w/Wire Leads, Piezo Audio Transducer Buzze |
| Manufacturer | CUI Inc. | CUI Inc. | CUI Inc. |
| Product Category | Buzzers | Buzzers | Buzzers |
| Series | CPE | CPE | CPE |
| Packaging | Bulk | Bulk | Bulk |
| Frequency | 4.5kHz | 6kHz | 6kHz |
| Termination | Wire Leads | PC Pins | Wire Leads |
| Driver Circuitry | Transducer, Externally Driven | Transducer, Externally Driven | Transducer, Externally Driven |
| Technology | Piezo (with Feedback) | Piezo | Piezo |
| Input Type | DC | peak-peak Signal | peak-peak Signal |
| Voltage Rated | 12VDC | 10Vp-p | 10Vp-p |
| Voltage Range | 3 ~ 28V | 30V (Max) | 30V (Max) |
| Operating Mode | Continuous | Continuous | Continuous |
| Sound Pressure Level | 83dB @ 12V, 30cm | 90dB @ 10V, 10cm | 88dB @ 10V, 10cm |
| Current Supply | 13mA | 8mA | 8mA |
| Operating Temperature | -30°C ~ 85°C | -30°C ~ 85°C | -30°C ~ 85°C |
| Washable | No | No | No |
| Port Location | Top | Top | Top |
| Mounting Type | Chassis Mount | Through Hole | Chassis Mount |
| Size Dimension | 24.0mm Dia x 5.5mm H | 24.0mm Dia x 7.2mm H | 24.0mm Dia x 4.5mm H |