The BIS VM-355-401-S4 (BIS0131) is a high-frequency (13.56 MHz) RF assembly with dimensions of 40 x 15 x 105 mm, featuring a rod antenna design. It supports DIN ISO 15693 and DIN ISO 15693 (High Memory) data carrier types, with a male 4-pin connection. The housing is constructed from nickel-plated zinc die casting.