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+--- Thread: KC868-A4 ,RS232 can not communicate with Max232 (/showthread.php?tid=1130)
RE: KC868-A4 ,RS232 can not communicate with Max232 - admin - 11-26-2021
if more than 20mA, read the data will as the MAX value.
but if >28mA for work long time, the sampling resistor will be damaged.