The LX-M4 perimeter electro-fence alarm system is to face non-compelling places, it consists of computer host, keyboard , and perimeter fence. Possess dual effect in preventing and alarm, low false alarm rate, high reliability, simple installation, strong compatibility, and so above characteristics. The entire standard perimeter accessories make perimeter manufacture craft easy, cost effective; it is not affected by environment, climate and terrain; safe and reliable, dual effect in preventing and alarm, the discharge pattern of electric capacitance pulse not only guarantee guard, preventing and alarm function,but also make sure the human's security when touch the wire; compatible for all kinds of alarm host in the market. There are three kinds of alarm modes: touching wire,short-circuits,and break off , RS485 communication port, constant opening alarm output, DC12 output, the main host can work normally and independently without keyboard( can be as detector service with all kinds of alarm host), the rainproof outer covering protection design suits for installation at outside. Widely used in the private district, the villa and business unit and so on the non-compelling places. Water reservoir, power plant, transformer substation and so on social public resource unit.