xxs-z series microcomputer central signal alarm device, is a centralized management microcomputer signal alarm system that designed for power plants, substations signal system. alarm has characteristic include anti-interference ability, simple operation, easy to install and limited maintenance. also has ability of recall alarm signal, power fail protection of memory signal, dual-color and dual-tone alarm pattern, special function of automatic silence of alarm audio. microcomputer use system worked as control part of this product combined by microprocessor, data storage, input output interface. product display part (alarm window) using a new type of solid flat tube (cold light source),service life lasting more than 100,000 hours. the product widely used in electric power, petroleum, chemical, metallurgical and coal industries, is a high intelligent product of automatic monitoring and signal alarm for power and industrial.