The P 300 Cascade Proximity Reader is a member of the Pyramid Series Proximity line of OEM proximity readers, cards and tags for access control from Farpointe Data. Making use of proven digital radio frequency identification RFID technology, it may be mounted directly to a metal door or window frame mullion. Additionally the P 300 features the option of HID proximity compatibility model P 300 H allowing it to read both HID and Pyramid Series cards and tags.