I need to make this construction (door is closed by default, door is opened to the top). This is the scheme:
Red rectangle on the picture is the aperture, blue rectangle is the door (weight is about 0.5 kg), which moves top when door need to be opened. Green stripe on the picture is the rail for the door.
Which electrical engine should I use?
Estimated time of door opening is about 10 seconds, I want to send signal to up the door, it should be drop down when power is lost or I should send a signal to drop it down.