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| PartNumber | EF-29586-000 | EF-29615-000 | EF-29734-033 |
| Description | Speakers & Transducers 7.87 X 5.59 X 4.01MM 126 SENS, 12S PORT | Speakers & Transducers 7.87 X 5.59 X 4.01MM 126 SENS, 1S PORT | Speakers & Transducers 7.87 X 5.59 X 4.01MM 126 SENS, 12C PORT |
| Manufacturer | Knowles | Knowles | Knowles |
| Product Category | Speakers & Transducers | Speakers & Transducers | Speakers |
| RoHS | Y | Y | Details |
| Product | Receivers | Receivers | Receivers |
| Frequency | 6.3 kHz | 500 Hz | - |
| Sound Pressure Level | 126.5 dBA | - | - |
| Impedance | 135 Ohms | 135 Ohms | 128 Ohms |
| Termination Style | Solder Pad | Solder Pad | - |
| Length | 7.87 mm | 7.87 mm | 7.87 mm |
| Width | 5.59 mm | 5.59 mm | 5.59 mm |
| Depth | 4.06 mm | 4.01 mm | 4.01 mm |
| IP Rating | - | - | - |
| Packaging | Bulk | Bulk | Bulk |
| Series | EF/FEF | EF/FEF | EF/FEF |
| Brand | Knowles | Knowles | Knowles |
| Length in | 0.31 in | 0.31 in | 0.31 in |
| Length mm | 7.87 mm | 7.87 mm | 7.87 mm |
| Product Type | Speakers & Transducers | Speakers & Transducers | - |
| Factory Pack Quantity | 25 | 1 | - |
| Subcategory | Audio Devices | Audio Devices | - |
| Width in | 0.22 in | 0.22 in | 0.22 in |
| Width mm | 5.59 mm | 5.59 mm | 5.59 mm |
| Dimensions | - | - | 7.87 mm L x 5.59 mm W |