With LED indicators 4-way TTL RXD, TXD have LED indicators. On-board 3.3V power supply chip Use 1117-3.3 SOT89 package chip, can output 400MA. 4-channel TTL serial port can be independently communicated out 4 XH-4 seat TTL level, can use the matching cable external. Using mainstream TYPE-C interface This interface with USB cable is convenient, most cell phone cable can be used.It must be noted that only the charging function of can not be used. Support 4-way serial high speed communication 4-way USB-TTL serial.
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