2.8' TFT R99 Digital Doorbell Camera Peephole Viewer Children & Senior Friendly - Records visitors in pictures and videos without a smartphone,safer for you and your families No PIR,No Night Vision - Simple push button to see large image without darkening the peephole, Easy to see for people of any height,0.3 mega pixel CMOS,320*240QVGA,Clear image in LCD Panel on door FREE SD Card Storage - 8GB micro SD card (Pre-installed),2.8 inch displayed LCD Screen70 View angle3 AA Alkaline batteries Easy Installation - Takes less than 3 minutes,Door hole range:12-28mm;Door thickness range:35-105mm.