SwitchBot Curtain 3 with Solar Panel - Set of 2 I am selling these because I purchased them in July but no longer need them. This is a set of two, including the main units and solar panels. Only the standard type of hooks are included, not the additional roll for hook installation. It has a function to automatically close the curtains depending on the strength of the sunlight, which is operated by a sensor built into the solar panel (sold separately). Even the elderly and children who don't have smartphones can easily operate it using a remote button (sold separately). Also, it has a touch & go function that automatically opens and closes the curtains just by pulling them, making it convenient when you're in a hurry to go out in the morning.