Home and Hotel Security This Portable Door Station is an industrial strength access control device that prevents unwanted forced entry and protects home/travel hotels/apartments. Also for everyone in public buildings, schools and offices. Easy to install without tools. It just takes a little time to get used to the gap under the swing door. Place the door lock detent directly under the door handle, then adjust the foot so that it grips the ground firmly. In an emergency, the quick release is unlocked by an upward movement. Note: Test the door to make sure the door stop is securely in place. Upgraded doorstop The upgraded doorstop is made of thickened aluminum alloy, which is crack-resistant and durable. The bottom is made of high-quality rubber material, which has strong grip and wear resistance. Great design uses force displacement to block the door against attempts to force entry. Makes you feel at ease and safe. Easy to carry The anti-theft door stopper is very compact and has an extra storage pocket. It is very convenient to carry on business trips and tourist accommodation, just put it in your bag or pocket. Compatibility All This door safety stopper is better for door clearances of 0.12-1.38" (3-35mm) and door thicknesses of 1.18-1.97" (30-50mm). Compatible with all types of floors, the hinge and angle system will lock securely to carpet, tile and composite when external pressure is applied to the door.