Keri’s NXT Series Proximity Readers are designed to blend aesthetics, read range performance, and small package size with an extremely thin profile into a product that is priced significantly less than competing proximity readers. The readers are for use exclusively with Keri’s revolutionary access control system based on the NXT Series of IP-based Controllers. With an allowable cabling distance of 1,000 feet from the controller and using just 4 conductor cable, the NXT Series of Readers dramatically reduce cabling costs when compared to traditional 6 or 7 conductor reader interfaces. Encrypting identification data between the card and reader and supervising the reader from the controller to check for failure provides the most secure reader solution available. The readers are compatible with all NXT Series Cards and Tags. The NXT-3R Mullion Reader, designed for mounting on metal window doorframes/mullions, is one of the smallest proximity readers on the market yet offers exceptional read range. Measuring just 3.75 inches high by 1.60 inches wide by 0.625 inches deep (9.5 cm high x 4.1 cm wide x 1.6 cm deep), the NXT-3R is designed to mount directly on metal or a wall without requiring mounting brackets or spacers.