1. The Mounting Holes Of The Doorbell Bracket Are All On The Back. Protect Your Smart Doorbell From Theft. The Doorbell Holder Adopts A Unique Shape Design To Provide An Unobstructed View, Allowing Your Smart Doorbell To Fully Capture Every Important Moment. Enjoy Optimal Performance And Reliable Security. Best Choice For Apartment, Home, Office And Room Renters. 2. Most Brands Of Video Doorbells Fit Perfectly Inside The Doorbell Camera Holder. 3. Perfectly Suitable For Video Doorbell Ring Bink Video Doorbell, Etc. 4. The Doorbell Bracket Is Suitable For Most Types Of Security Doors, Inward Opening Doors And Left And Right Opening Doors (Not Suitable For Doors That Open Outwards). The Thickness Of The Door Must Be Between 0.6 Inches And 2.3 Inches, And The Space Between The Door And The Frame Exceeds 0.06 Inch. It Is Recommended That You Measure Your Door Size Before Purchasing. 5. The Doorbell Holder Is Designed With Simplicity In Mind And Can Be Set Up Quickly And Easily, Saving You Time And Energy. The No-Drill Doorbell Holder Is Easy To Remove Without Leaving Any Residue Or Damaging The Door. It'S Perfect For A Hassle-Free And Damage-Free Installation Experience. Function:Easy To Install Applicable Products:Wireless Doorbell Note:Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Colour:Black Material:plastic Package Contents: 1 Set * Doorbell Bracket Kit 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.