KY40A 1.variety of control mode remote control, cable switch, hand-pull when power offer, long-distance control. 2.Durable,reliable,quiet track transmission system The inner Cog belt is made of the thin steel wire and the wearable rubber. Flexibility is good, not becoming brittle and slippery, durable and reliable, little friction, noise-free effect sounds excellent.3.Pull the curtain by hand when power cut The clutch inside, can help to pull curtains opening and closing with hand in case of power cut. 4.Group Control When necessary, you can close or open multiple curtains (classrooms, etc.) at the same time, rather than checking them one by one.5. Electronic Limit The traditional motorized curtain requires to set the opening and closing procedure when installation. There still be deviation fault during using sometimes. While for Orlant intelligent curtain, no need to set the open limit or close limit of curtain, curtain will automatically stop if meet resistance after fully open or fully close. 6.Large Power Range Suited to the power voltage 100V-240V, avoiding the influence from voltage fluctuation.