I need to use the CRC16-CCITT cheksum in javasript but I can't implement it ... This calculator works: https://crccalc.com/?crc=0x00 0x00 0xAA 0x10 0x57 0x00 0xA0 0x00 0x00 0x04 0x00 0x00 0x00 0x01 0x00 0x00 0x00&method=CRC-16/XMODEM&datatype=hex&outtype=0 Thanks in advance