韩国大产DAESAN计时器,DX50-A，DX50-B，DX50-C,DX50-DTYPESTEP??????????TYPESTEP??????????DX50-AX10.02S~1sec1SECDX50-EX10.02S~3min3MINX100.02S~10sec10SECX100.02S~30min30MINDX50-BX10.02S~3sec3SECDX50-FX10.02S~6min6MINX100.02S~30sec30SECX100.02S~60min60MINDX50-CX10.02S~6sec6SECDX50-GX10.02S~3hor3HORX100.02S~60sec60SECX100.02S~30hor30HORDX50-DX10.02S~12sec12SECX100.02S~120sec2MIN)