Compatibility Doorbell: The video doorbell mount ONLY designed for Camera,perfect for apartments,offices, rentals,home and dormitories(NOTE: Not include Blink Video Doorbell) Compatibility Door: Please measure before purchasing to make sure it fits your door.for mount no drill.Iron security door & storm doors & screen doors & Glass door can not use.NOTE: The door must be inward swinging and thickness must between 1.4 inch to 2.3 inch, door should larger than 0.06 inch No Cover Anti-Theft Design: mount lengthen anti-theft lock design. It can't be removed the doorbell from the outside of your door unless you unlock the anti-theft lock.No Cover design avoid to block doorbell motion sensors and two-way audio anymore. Doorbell Mount No-Drilling: for apartment friendly holder!Our camera mount has No-Drilling and No Adhesive design, avoid to damage your door by screw hole or glue residue on the door Easy Installation: The doorbell door mount Attaches securely in set up in minutes and easily installs and uninstalls.Adjust the fixed clip to fit your door size by yourself. NOTE: NEED Original Doorbell Back panel! Because the doorbell will install on Original Back panel then fixed Original Backpane on plastic plate. Colour:As Shown Material:plastic Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Package Contents: 1 * anti theft doorbell mount Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.