The automatic control unit for chicken doors offers reliable protection against nocturnal predators. It enables the daylight or time-dependent opening and closing of chicken doors and can be operated with batteries or via a mains connection. For automatic daylight and time-dependent opening and closing of chicken doors in poultry houses. Reliable protection of poultry from nocturnal predators. Light sensor with 1 metre cable length allows the control unit to be installed indoors. No unintentional opening due to lightning or brief brightness thanks to the delayed reaction of the light sensor. Automatic motor switch-off in the event of overload and stop function in the event of resistance with subsequent continuation of the closing process. Battery operation (4x AA Mignon included).