2. The IR Extender Components Setup
RS-232 SERIAL INTERFACE
| Pin | Definition |
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| 1 | - | Not used |
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| 2 | TX | Transmitter |
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| 3 | RX | Receiver |
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| 4 | - | Not Used |
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| 5 | GND | Ground |
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| 6 | - | Not used |
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| 7 | - | Not used |
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| 8 | - | Not used |
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| 9 | - | Not used |
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