This reader controller for mullion mounting, RC 04 MCT M, operates at both 125kHz and 13.56MHz and includes Bluetooth functionality, providing a... Our Reader -Controller continues to take advantage of our patented technology and remains an all in one intelligent device; eliminating the need for a panel and allowing you to take advantage of your existing network. IP Reader-Controller Mullion RC 04 ENROLL PRX ISONAS (ALLEGION BRAND Isonas Configuration Tool Download ISONAS RC 04 MCT M Pure IP Mullion Reader Controller Isonas Mullion Reader Controller 10 Pcs Wirewound Ceramic Cement Resistor 1 Ohm 5% 10W Watt