Type HDTV/Megapixel , Pixel Resolution 4 Mega Pixel , Focal Length 2.8 mm , IR Illumination , Sensor size 1/3” , Microphone Built-in , 1xMicroSD Card Slot , 1xAlarm In , 1xAlarm Out , Supports card capacities up to 256GB , Power options PoE/12V , Power supply requirements 12V DC/PoE , Operating temperature range –10°C to +45°C (14°F to +113°F) , Dimensions Φ78.5 mm × 90.5 mm × 127.8 mm