Abstract: A wireless mobile hand-held secure system for controlling and monitoring ice making machines which is preferably comprised of a single hand-held master selector device that transmits up to eight discrete bits of data to, and receives up to eight discrete bits of data from, one of numerous remote devices using secure data encoded on an RF signal, and a remote device installed in the ice making machine. The remote device electrically detects the operating status of up to eight designated functions of the ice making machine and when requested, transmits the status of said functions to the hand-held master selector device using secure data encoded on an RF signal, and decodes the secure data received from the hand-held master selector device and electrically controls up to eight designated functions of the ice making machine based on the operator supplied input to the wireless mobile hand-held master selector device.