Our standard range of chain window openers are used to control ventilation, windows, skylights, blinds and any other items you want to move with electric actuators. It can be controlled with a simple switch or our optional remote control. Because it uses a stainless-steel chain, it operates smoothly and has stable performance. Also, its cycle life is up to 10,000 times, which is not available in general window openers.
http://www.chinaautomaticdoor.com