The photoperiod is a system that recreates a solar year inside a room through the use of lamps, moving the spring in autumn.

This allows you to have hunting birds that will sing their spring call in autumn, during the hunting season; Of course it can also be used to hatch the birds off period.

The PRO-2000 PLUS has specific automatic time tables based on the species of birds held, and recreate sunrise sunset daylight and moon phases.