Optical Fiber Bluetooth 5.0 Adapter CSR8675Designed for modern lifestyles, this product combines convenience, functionality, and reliable everyday performance. Product information Product advantages: 1. Switch the mode by flipping the switch and the M button, you can switch TX RX, fiber optics and any mode at will in the power on state, without shutting down, currently we can do it in the market without first shutting down to switch TX RX, all the same products on the market switch RX TX, all
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