Sensor Dusk To Dawn: Point the tiny hole in the candle's body to the window. The built-in light sensors react to lightness changes, controlling the switch. This makes the electric window candles automatically turn on at dusk and off at dawn, lighting up your window all night without extra operation. Convenient Suction Cups: Each LED window candle is equipped with a strong suction cup for installation directly on the window. This avoids using a holder on the sill and prevents the candles from being knocked down or tangled by curtains. It is especially useful for those with French windows or narrow window sills. Please ensure the suction cup and the glass surface are clean and flat. Roman Column Design: Ivory stripped taper candles feature a flickering 3D flamelight. Powered by 2 AA batteries (not included) which can last over 30 days. Whether used individually or with candle holders, these flameless window candles bring a fresh natural feeling to your space. Flickering Candle Flame: The 3D solid LED bead ensures the holiday window candle flame has no defects from any angle. The strong flickering light mode makes the flame noticeable even from a distance, simulating real candle effects while avoiding burning and smoke. There is no need to worry about children or pets getting hurt. Package and Service: Each package contains 6 candlesticks and 6 suction cups. Each battery-powered window candle is thoroughly tested before sale. Avoid using them in high-temperature or high-humidity environments. If any problems occur during use, please contact the Customer Support Team.