Features:*Auto snapshot and wake up when visitor presses doorbell button.*3.5inch digital LCD screen, clear images with 150 degree wide angle.*Built-in memory, can take 100 photos, cycle replacement.*Auto switch to black and white images for night view when in dark.*Can set don't disturb mode, no bell sound when visitor calls in.Monitor Specifications:Display: 3.5 inch TFT LCD screenPower Supply: 3*AA battery (not included)Storage: 100 photos maximumScreen Off Time: 10sDoor Thickness: 42-72mmMenu Set: Brightness, contrast, chrome, date, etcLanguage: English, German, France, Spanish, Nederlands, ChineseMonitor Size: 156*106*34mm Camera Specifications:Image Sensor: 1/4inch CMOSResolution: 0.3MP megapixelsView Angle: 150 degreeLight Sensor: Built-inNight View: SupportLow illumination: 0luxCamera Size: 65*65*58mm