Compatible With Multiple Wireless Doorbells: doorbell mount is used for different sizes of doorbells by filling the inside with sponges of different thicknesses. Only compatible with Ring doorbell 4/3/2/1 All-new Ring battery doorbell plus(2023 release), Blink doorbell, Eufy doorbell S220/C210. Note: Only for wireless video doorbell, not for wired (doorbell not included). Which Doors are Applicable? : It is really important that you measure your door before buying. The anti theft doorbell mount no drill is only suitable for the thickness of the door is 1.25inch-1.95inch, and the gap between the door and frame is more than 0.06inch. Note: Only suitable for inward opened doors, storm door outward opened door is not suitable. Doorbell Mount No Drill: The anti theft door mount is fixed with double screws, more stable than the ordinary single screw doorbell mount. No drilling design can avoid damaging the integrity of the door panel and the newly designed front face opening does not affect