本文向读者介绍一种简单实用的多路控制有线对讲机。它包括一个主机,根据需要可设若干个分机,可作为厂矿、机关、宾馆等部门的内部传呼电话。通话距离500m 左右。主机装在中心控制室,如办公室、传达室、值班室等处,可随时与各分机进行互相通话。分机可单独呼叫主机。 This article introduces the reader to a simple and practical multi-control wired intercom. It includes a host, according to the need to set up a number of extensions, can be used as factories, mines, offices, hotels and other departments of the internal paging calls. Call distance of about 500m. Host installed in the central control room, such as the office, communication room, duty room, etc., at any time with each extension to talk to each other. The extension can call the host separately.