居民楼互助通信器是一种多用途、低成本通信装置。它采用单片机作为核心，辅以电力线载波专用集成电路，并发挥居民的联防、互助作用，所以在增加功能的同时降低了成本。居民楼内的通信利用了供电网，使互助通信器的安装更加方便、经济，实现了即插即用。 Residential Mutual Communicator is a multi-purpose, low-cost communications device. It uses a single-chip microcomputer as the core, supplemented by power line carrier ASIC, and to play a resident defense, mutual aid role, so reducing the cost while increasing functionality. Communication in residential buildings uses the power supply network, so that the installation of mutual aid communicators is more convenient and economical, achieving plug and play.