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Edwin Chen 3.1 1 = Connection =
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Xiaoling 4.2 3
Edwin Chen 3.1 4 [[RS485-LN>>https://www.dragino.com/products/lora-lorawan-end-node/item/154-rs485-ln.html]] and [[RS485-BL>>https://www.dragino.com/products/lora-lorawan-end-node/item/167-rs485-bl.html]] don't have RS232 Interfaces, So users can't connect them directly to RS232 sensors. User can use RS485 or TTL to RS232 converter for the connection purpose.
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Xiaoling 5.2 7 (% style="color:red" %)**Please note RS485-BL support both RS485 and TTL interface. RS485-LN supports RS485 interface only. **
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Xiaoling 5.1 10 **Below is the connection:**
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Xiaoling 4.2 12 (% style="color:blue" %)**RS485 to RS232 Converter:**(%%)  Connect RS485 interface to RS485-BL/RS485-LN, Connect RS232 port to RS232 sensor.
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14 [[image:image-20220603172402-1.png]]
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Xiaoling 4.2 17 (% style="color:blue" %)**RS232 to TTL Adapter:**  (%%)RS232 connect to RS232 Device, TTL Connect to RS485-BL/RS485-LN
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19 [[image:image-20220603172650-2.png]]
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