Principle: Powered by a rechargeable lithium battery, the motor drives the existing pull beads or pull ropes to achieve the purpose of automatically opening and closing the curtains up and down or left and right. Features: 1. Easy to use: no need for tubular motor, no need to change the existing curtain structure, can be used for new and or existing curtain products; 2. Easy to install: install it inside or on the side of the window frame, and it can be installed in a place within reach in 3-5 minutes; 3. Easy to set up: a) With 6 presses, the curtain direction and travel setting can be completed within two minutes, and the connection with the remote control can be established; b) One key --- select up or down direction (according to the left or right adjustment of the curtain); c) Second key --- establish a connection with the remote control; d) Press the button 3 times---Complete the setting of the highest and lowest position of the curtain, that is, the curtain stroke; after the setting is completed, the curtain is in this range run within. 4. Operation method: a) It can be operated manually or controlled by our remote control; b) A remote control can simultaneously control the lifting or opening and closing of one or several curtains. 5. Considerate: If you don't want to use our products, remove the controller, and the curtains can still be used normally.