1.    OutlineFRS-DEMO-B is designed for Walkie Talkie transceiver module SR-FRS-1W and SR_FRS_0W5 demonstration, it can be used for  both UHF（400M-480M）and VHF (136M-174M);it also can be used for voice intercom and data transfer  demonstration;  it is easy to set all the module parameter via the USB interface; When select the channel, it would voice broadcast the current channel number; You may