Keri's MS 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 access control system based on the PXL-500 Tiger and the NXT-2D and NXT-4D Controllers. The MS-3000 reader measures just 3.4" long x 1.4" wide x 0.38" thick (86mm x 36mm x 10mm) thick, and is designed to mount on a metal window or door frame (mullion) or directly on a wall. Read range is up to 4" (10cm). The MS-5000 reader measures 4.3" long x 3.0"wide x 0.38" thick (109mm x 76mm x 10mm), and can be mounted on a single gang electrical box or flat on a wall. Read range is up to 6" (15cm) when mounted at least one inch off metal. If the reader is mounted using a metal electrical junction box with the thickness of the wall material separating the reader from the box, read range will be reduced. The readers are attractively designed with a thin profile and modern appearance. The readers are compatible with Keri's KC-10X and MT-10X proximity card styles as well as the small, extremely robust PKT-10X Key Tag. Additionally, they can read any Indala ASP Card or Tag if they are to be used in conjunction with a PXL-500 Controller.