... alarm call, Battery Save, VOX, CTCSS, DCS function Walkie Talkie, Support 16 channels, FM radio, Receiving alarm call, Battery Save, VOX, CTCSS, DCS ... 4)Receiving current: ≤100mA 5)Silent waiting: 20mA Walkie Talkie, Support 16 channels, FM radio, Receiving alarm call, Battery Save