VIS_14_C is only applied for DS-KD6002-VM door station;
VIS_14_E is applied for villa door station(including DS-KV8102-IP(VP), DS-KV8X02-IM );
VIS_14_A is applied for all indoor stations and master station and 8 series door station (including DS-KD8002-VM and DS-KD8102-V )