Smart curtains allow you to open and close a curtain on command or with a schedule. That way, natural sunlight can enter the room when needed. But unfortunately, this system is rather expensive and you are probably already happy with your existing curtain. The SwitchBot Curtain Smart Electric Motor hangs on the railing and can push up to 8 kg (17 pounds) of curtain weight. It is completely wireless, powered by a built-in battery that should last for about 8 months. It essentially turns your regular curtain into a smart one and allows for voice control or as well as…