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| This BB set speed senor use infrared sensing technique. |
| The photodiodes is embedded in the BB set . It is fully protected by the |
| shaft casing, |
| Smart electric component and circuit design , detects only forrward movement |
| and generate corresponding speed signal . |
| The dimension is fully compatible with the original BB set . |
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| Feature: |
| 1. Sensor embedded |
| 2. Fully sealed |
| 3. Water and Moisture proof |
| 4. Easy to install |
| ***Patent Pending |
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