... ,27.125MHz, 26.601712MHZ 21.47727MHZ 49.860MHz,12.000MHz,24.000MHz, 10.000MHz,8.000MHz, 48.000MHz.16.9344MHZ. 5. For PMP and MP4: 27 ... reading system/test instrument/ultrasonic:50.000MHz,3.579545MHz,48.000MHz,4.000MHz, 12.000MHz,50.000MHz, 10.000MHz8.000MHz.6.000MHz. 2. For security prevention: 13.560MHz ...