• Diversified functionsFCC ID: 2AUZJ-TW888S, 16 preset channels can be selected by rotating the knob on the intercom to select any channel within the frequency range; you can program 50 CTCSS audio and 105 CDCSS audio on each programmed channel, The Two-Way Radios has the functions of VOX voice control, scanning, low battery alarm and night flashlight,etc;