Smarteck Box | Power Banks, Keyboards, Headphones ...

Turn on/off double-strike mode. nWhen the lowest position of n is 0, cancel the double strike mode. n1When the lowest position of n is 1, turn on the double strike mode ... determine the total account of (cn,fn and parameters) Cn assign QR-Code type ,fixed to 49. Fn assign command . Parameters was assigned by different command. fn. format. No ... ................
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