MOBILE-ENABLED CONTACTLESS SMARTCARD OSDP READER; designed to be mounted to metal door and window frames (mullion) or single gang wall box with switch plate; reads VAX-BTC mobile credentials up to 15 ft (4.6 m); OSDP protocol. Also reads MIFARE Classic, DESFire EV1 and EV2 compliant smartcards; read range up to 1.5 in. (38 mm).