•Built-in 4000mAh lithium battery, the curtain controller operates with low power consumption, solving charging troubles and providing a long companionship of 6 months •Simple installation: Curtain motors can be used on U-shaped/T-shaped curtain track, no tools are required, no complex wiring is required, and installation is the most convenient •Temperature and light sensors: Curtain temperature and light sensors can be adjusted according to your daily routine. When the temperature and brightness are higher than the set values, the curtains will automatically close to create a comfortable home environment for you •Percentage control: The curtain motor adds personalized functions. You can choose to open all the curtains or open some curtains without worrying about the room being too bright or too dark •Timing control: Curtains can be opened or closed at scheduled times. The curtains open automatically in the morning so you can slowly wake up in the sun without being woken up by the alarm clock, and they close automatically at night Installation conditions: U-shaped track: •The slot width on the lower surface of the track is less than or equal to 15mm. The distance from the upper surface of the bottom of the lifting ring to the bottom surface of the guide rail: 3-32mm. The thickness of the lifting ring does not exceed 5mm. •In addition to straight tracks, curtain controllers also support arc-shaped tracks •For special-shaped tracks, the conditions that need to be met at the turn are: the distance from the starting point of the turn to the corresponding wall in the opposite direction of the arc tangent is greater than or equal to 25cm •Special-shaped tracks with bends are not supported T-shaped track: •The T-shaped track needs to ensure that the front is flat, the distance from the upper surface of the bottom of the lifting ring hook to the bottom of the guide rail is 3-32mm, and the thickness of the lifting ring does not exceed 5mm •In addition to straight tracks, curtain controllers also support arc-shaped tracks •For special-shaped tracks, the conditions that need to be met at the turn are: the distance from the starting point of the turn to the corresponding wall in the opposite direction of the arc tangent is greater than or equal to 25cm •Special-shaped tracks with bends are not supported Installation Precautions: •To ensure the installation effect, please wipe the track surface clean before installing the curtain controller •After the curtain controller is installed, you can set up smart controls such as timing light/temperature closing of the curtains in Tuya Smart or Smart Life app. If you need to use light to control the closing of the curtains, please face the window and install the curtain controller on the side close to the window. In order to ensure the light sensor effect, please ensure that there is no opaque obstruction in front of the light sensor •If you want to use a curtain controller to control dual-track curtains at the same time, you need to install curtain controllers for the front and rear curtains respectively, and the distance between the front edges of the front and rear rails must be greater than or equal to 5mm. If the distance between the front and rear tracks is less than 5mm, there may be mutual interference during opening and closing of the curtains •It is not recommended to install curtain controllers on older tracks. Due to the aging of the tracks or rings, the material is fragile and may cause the curtains to fall off or fall •If the height of the curtain itself is too high and the curtain fabric drags to the bottom, to ensure the product experience, please roll up the lower edge of the curtain until it is no longer in contact with the bottom •To ensure the actual effect of the product, please scan the QR code in the manual to watch the product instruction video. And follow the instructions to install and use the product Specification: •Product model: LY1668 •Product speed: 10m/s •Single Controller Battery: 3.7V 14.8WH 4000mAh battery •Battery life: 6 months •Charging time: 8 hours •Supported rail types: U-shaped rail, T-shaped rail •U-shaped track: bottom slot width 0-15mm, bottom ring width 0-5mm •T-shaped track: The width of the bottom of the track is 5-40mm, and the width of the bottom lifting ring is 0-5mm Package included: •2 x Curtain Controllers •2 x Charging Cables •1 x English User Manual