Renogy 30W 50W 100W 175W 200W 320W 640W Solar Panel 12V Mono Off Grid RV Caravan. Renogy BT-2 Bluetooth Module. Bluetooth 4.2 and BLE technology provides fast and uninterrupted communication. 【User-friendly】 Easily connect the Bluetooth Module to the RS485 communication port, and follow the App instructions.
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