Tuya ZigBee Smart Electric Curtain Robot Sensor for Alexa A Light Sensor Allows Smart Linkage, to Realize Curtains Automation Timing Function:With our curtain robot, you can easily set timers to automatically adjust according to your daily routine, whether in the morning or at night, creating your own personal space. Long Battery Life of 120 Days:Our curtain robot comes with a powerful battery that offers up to 120 days of runtime, reducing the hassle of frequent replacing and making smart home living more convenient and worry-free. Small Size, Big Power:Our curtain robot, though compact, ensuring smooth operation of your curtains and handling various materials and sizes with ease. Pull-to-start, Stop-on-obstacle:With the manual pull-to-start design, simply give it a gentle pull to activate the curtain robot; additionally, the intelligent stop-on-obstacles feature ensures safe and convenient use. Notice before purchase:NOTE: ZigBee gateway is required, please purchase in addition. Specification:A:Roman Pole Version Colour:White Material:plastic Package Contents: 1 x Curtain robot(Due to different product batches, the appearance may vary, which does not affect the use) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.