This is a listing for the second-generation model of the SwitchBot device, U-Rail 2, which smartens existing curtains without the need for construction. This device, sold by SwitchBot, allows you to easily open and close curtains via smartphone app or voice control (smart speaker integration). Compared to the first generation, the support column is thinner, and the roller parts are replaceable, making it compatible with various curtain rails. It can also be used with special rails such as TOSO Elite with dedicated parts. Condition: New and unopened, but there are some slight stains on the box. Please refer to the photos for the detailed condition. All included accessories are shown in the photos. I do not know the names of each part, so please make your judgment based on the photos. m(_ _)m Operation check items: ・Pairing OK ・Registration and operation OK We look forward to your purchase! 7021650