CD series intelligent digital temperature controller used 8-bit as the core of MCU with the high precision, strong anti-interference performance, high reliability, the free importation of a variety of sensors, while the use a wide range swithing power supply, performance indicators, input methods, control and security size corresponding with the international famous branding, can insteady of them, CD series intelligent instruments, with the latest combination of advanced fuzzy control algorithm of PID regulator for precise control of charged objects.