* Automatic sensor door closer feature 1. When studying and working, avoid repeatedly getting up and opening the door to improve the efficiency of study and work; this door closer can prevent kitchen fumes from entering the living room, which is effective isolate the moisture and stale air from the bathroom; when you turn on the air conditioner, the hot and cold air will not leak too much, thus reducing the electricity bill and saving worry and trouble. 2. Multifunctional automatic door closer, automatically close all doors. Hole-free adhesive installation, good firmness, does not damage the wall, easy installation, high-temperature resistance. 3. The high-quality steel wire rope has passed 50,000 times of tensile test and rebound test, with strong tensile force. 4. Suitable for doors, or doors with a slightly stronger closing force.Doors that open left and right, wooden and metal doors, residential and commercial doors, exterior/inner door closers, fire doors. * The high-quality steel wire rope has passed 10,000 times of tensile test and rebound test in strong 1000G tensile force. The steel wire rope with strong tensile force and good stretching. This door closer is inductive and it can automatically close the door behind you when you don't remember close the door to prevent the pets sneaking into your room uninvited. Anti-oxidation, anti-corrosion, no rust, stable, wear-resistant, weather-proof, quiet, safe shut-off device. Suitable for doors,or doors with a slightly stronger closing force.