PLUG AND PLAY TECHNOLOGY - It takes no more than 10 minutes to install the door (no complicated wiring or cabling). BATTERY POWERED - Minimum of 1 YEAR battery life that works in all conditions (2xAA batteries included, you can replace them in 3 min, no need for solar cells). EASY TO USE - Easily programmable pushbutton. It automatically opens in the morning closes in the evening. You can set the timer or use the integrated (LUX) Light Sensor. WORKS IN EXTREME WEATHER - Waterproof ; will work in snow, rain, and dust from -15F to 140F (-26C to 60C). ALL IN ONE DESIGN - One piece; full aluminum doors and slider. High-quality powder-coated Fine structural color (explicitly designed for the external environment).