the swinging gate 16 pivoting generally about a vertical axis 25 located at an edge of the gate 16 opposite a vertically extending movable edge 20 when the gate 16 is open the keeper plate 12 and magnet assembly 14 are separated and when the gate 16 is closed the keeper plate 12 and magnet assembly 14 are inter engaging referring to fig1 7 and 8 the magnet assembly 14 may have a rear mounting surface 36 which may abut and be attached to a front surface of the movable edge 20 and the keeper plate 12 may have a rear surface 64 that may abut and the attached to a front edge of the stationary stile 19 when the gate 16 is closed and the magnet assembly 14 and keeper plate 12 are inter engaging the front edges of the movable edge 20 and stationary stile 19 may be adjacent and parallel in this state a portion 22 of the magnet assembly 14 will extend over a front surface of the keeper plate 12 in cantilevered fashion and a rear surface of the magnet assembly 14 will abut the front surface of the keeper plate 12 an electrical cable 26 may extend from the magnet assembly 14 to carry signals from and power to a rfid tag reader to be described below contained in the magnet assembly 14 the signals may be provided to a remote industrial control system not shown managing a safety protocol referring now to fig2 in.