iEC22 Plus Intelligent Environment Controller is developed for modern hoggery with IOT management function.The controller has the following functions: built-in dual CPU security redundancy; remote monitoring and alarm functions on cell phone and computer to effectively avoid missed alarm and fake alarm; high safety protection level of power system to effectively eliminate lightning, variable frequency interference and AC contact harmonic interference, etc.; industrial large display with intuitive operation and simple settings; itcan work in a wide temperature range; automatic fan rotation to effectively protect and extend fan life; Smooth ventilation curve to avoid animal stress; the opening of curtain and damper can be controlled through the negative pressure; real-time fan airflow calculation via negative pressure; light program can work at ON/OFF mode, and sunrise and sunset simulated with light dimmer; for low age, negative pressure, wet curtain, wind speed control.