EASY INSTALLATION: Designed for easy installation, this door viewer can be quickly set up without the need for professional assistance, making it a good choice for any homeowner ENHANCED SECURITY: This door viewer provides enhanced security by allowing you to see who is outside your door without having to open it, offering peace of mind for your home COMPACT SIZE: The compact size of this door viewer makes it suitable for most standard doors, ensuring compatibility and ease of use in a variety of settings CLEAR VISION: Equipped with a wide-angle lens, this door viewer ensures a clear vision of the area outside your door, helping you to identify visitors from a safe distance This door viewer spy hole is simple to install ， A hole is drilled through the door with enough thickness for the peep hole to pass through., Manufacturer: FBANULPEX