任何个人按钮，感应器或报警装置通过无线电通信信号基本单元，因此不要需要用电线连接。
Any personal buttons, sensors or alerting devices communicate with the base unit via radio signals and thus dont need to be connected with wires.
任何个人按钮，感应器或报警装置通过无线电通信信号基本单元，因此不要需要用电线连接。
Any personal buttons, sensors or alerting devices communicate with the base unit via radio signals and thus dont need to be connected with wires.
应用推荐