The Electronics Line 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, the SP-6820 proximity reader offers a superior read range of 6-8 inches. The SP-6820 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 features RS-232 output to virtually any computer, making installation and setup fast and easy.