This device is used for ventilation control in closed-type livestock buildings. It allows the user, according to the signal of the temperature and humidity probes, to maintain the ambient temperature and humidity of the building on a specified curve by controlling the operation of ventilation, heating and mist cooling so as to meet the requirements for the growth of livestock.
The controller is designed as a closed-type enclosure, Class IP65. Touch-keyboard (4X4) is adopted. The controller has 8 red status LEDs, which indicating the current operation status, allowing the user to monitor the operation of the system without entering the building.
The 8-stage controller is used to control the heaters, constant-speed fans and mist cooling units. Among others, Stage 1-5 controls the constant-speed fans. The control object of Stage 6 can be configured as constant-speed fans or cooling units. The control object of Stage 7-8 can be configured as constant-speed fans or cooling units or heaters. The control object can be configured by the user.

Independent temperature probe:
Up to five temperature probes (four indoors, one outdoors) and one humidity probe can be connected to the controller in order to obtain a more accurate reading of the average room temperature and a fast reaction time. The number of the probes to be connected can be set.

Temperature controlling curve:
The controller can be set to automatically change the temperature and humidity in accordance with the user’s requirements by specifying a temperature curve with up to six different points each. The coordinates of the curve are (days, temperature), the controller will adjust the temperature and humidity according to the specified curve in a linear fashion. When the last point of the curve is reached, the temperature set point for that day is maintained until the curve is reactivated.

Minimum Ventilation Curve:
The minimum ventilation curve can ensure the oxygen supply and proper humidity of the room. The minimum v