说明：  SRW1042是一款先进的低成本射频收发模块，可提供覆盖240MHz 至930MHz 的频率 选择。极佳的接收灵敏度（-121dBm）可保证大范围、高连接的卓越性能。
(SRW1042 is an advanced, low-cost RF transceiver module, which provides coverage of the frequency of 240MHz to 930MHz Select)