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| PartNumber | CI-28267-000 | CI-28268-028 | CI-28267-A01 |
| Description | Speakers & Transducers Balanced Armature Speaker | Speakers & Transducers Balanced Armature Speake | Speakers & Transducers Balanced Armature Speake |
| Manufacturer | Knowles | Knowles | Knowles |
| Product Category | Speakers & Transducers | Speakers | Speakers |
| RoHS | Y | - | - |
| Product | Receivers | - | - |
| Type | Acoustic | - | - |
| Frequency | 5.5 kHz | - | - |
| Sound Pressure Level | 125 dBA | - | - |
| Impedance | 250 Ohms | - | - |
| Shape | Rectangular | - | - |
| Termination Style | Solder Pad | - | - |
| Length | 9.47 mm | - | - |
| Width | 7.18 mm | - | - |
| Depth | 4.1 mm | - | - |
| IP Rating | - | - | - |
| Packaging | Bulk | - | - |
| Series | CI | CI | CI |
| Brand | Knowles | - | - |
| Length in | 0.373 in | - | - |
| Length mm | 9.47 mm | - | - |
| Product Type | Speakers & Transducers | - | - |
| Factory Pack Quantity | 25 | - | - |
| Subcategory | Audio Devices | - | - |
| Width in | 0.283 in | - | - |
| Width mm | 7.18 mm | - | - |