Design for Long Term Use: chicken coop door opener is designed for long-term use. There is no wiring or cabling, the opener is powered by 3 AA batteries (batteries are not included). No complex wiring means a low risk of default. Besides, the coop door opener is made of high-quality Aluminum coated with professional paint, the average lifespan of the paint is more than 3 years. Easy to Install and Set:chicken coop door opener is equipped with detailed instructions. You do not need to assemble the door opener, you just need to install it in the right place. We also provide assistant cardboard for our valued customers. Everyone can install our product in 10 minutes. All For Your Convenience: The concept of automatic chicken coop door is all for our valued customers convenience. The battery box is at the surface of the drive system, no need to uninstall the chicken coop to change batteries. Multi-Modes for Multi-Scene Use: New generation chicken coop door opener comes with three basic modes: time mode, light-sensor mode, and manual mode. Different modes can work together, for example, you can set the door to open at a specific time and to close when it turns dark. An automatic coop door fits in every scene. Protection Program:chicken coop door is programed with a protection mechanism. If the door touched chickens, it will stop automatically. No worries about hurting your cute chickens.