General Compatibility: Designed specifically for R battery doorbells ( 2024 version), Battery Doorbell with /, and 2nd Gen Video Doorbell ( 2020 version), this mount ensures seamless integration with precise side openings for unobstructed motion detection and two way sound Adjustable Fit: Perfect for inward opening doors ( left or right) with thickness ranging from 0.6 to 2.3 inches and door to frame gaps over 0.1 inch, ensuring smooth installation without damaging surfaces Tool easy Convenience: Easily slide the mount onto your door and secure it with adjustable clamps; includes all necessary installation hardware for quick setup and easy removal when charging is needed Complete Package: Comes with 1 theft proof doorbell mount, detailed instructions, and full installation accessories ( excluding doorbell), providing everything required for immediate use Secure Installation: Features a theft resistant design with sturdy metal backplate and ABS cover, allowing removal only when the door is open for enhanced security and long lasting protect, Manufacturer: Kaeltsyn