The GK700-L3 series of miniature intelligent boiler controllers take CortexM3 processor as the core, color LCD screen as the man-machine interface, and display functions such as text, graphics and animation. It is suitable for the automatic control of small oil/gas, biomass fuel, electric heating steam generators, hot water boilers, and boiling water boilers. The controller adopts ARM technology to realize precise measurement and fixed value adjustment of various parameters. Its structure is compact, easy to operate, rich in information, with high degree of automation and resistance The advantages of strong interference capability and high reliability.