About this item 12mm GOLD PEEPHOLE: Fits doors between 1.1”-2.2” (28mm-58mm) wide. Not sure if the product fits your door before purchase? Please consult Brinno Customer Service or message Seller. Long-lasting Battery: This high efficiency camera will hold power for up to six months (approx. 1,800 triggers). Security: Knock and motion sensors. Images are automatically taken without your visitors’ knowledge and saved in a visitor log on an internal SD card. View images from visitor log using the camera’s built-in LCD screen or use the SD card to simply transfer visitor log files onto your computer. DIY Install: No complicated tools or hardwiring required. Camera is simply installed over existing peephole. Our easy to follow guide will have your camera set up and ready to use in seconds! Guarantee: Customer satisfaction is important to us, which is why we provide all our customers with a 2-year product warranty.