6-8 Inch Proximity Reader, Wiegand and RS-232 Output, Single Gang Mount The Sentinel-Prox SP-6820 is ideally suited for applications where a discriminating look makes a difference. An attractive package which looks great outside the board room or at the front gate in the rain or snow. The Sentinel-Prox SP-6820 proximity reader from AWID offers a stylish look and a superior read range of 6-8 inches. It is designed to mount on a standard-single-gang electric wall box or on the surface of an interior or exterior wall. The SP-6820 comes in dark gray or beige and is sure to blend in with the architectural design of any building. It is easily installed and the two-piece construction allows switching of covers to accommodate color changes.