Type HDTV/Megapixel/Outdoor/PTZ , Pixel Resolution 4 Mega Pixel , Focal Length 3.95 mm–177.7 mm , IR Illumination , Sensor size 1/2.8" , Min. Illumination 0.005 Lux , Effective pixels 2560 (H) × 1440 (V) , Electronic Shutter Speed 1/1 s–1/30000 s , 1xAudio-In , 1xAudio-Out , 1xMicroSD Card Slot , 1xRS-485 , 7xAlarm In , 2xAlarm Out , Power supply requirements DC 36V , Operating temperature range –40°C ~ 70°C , Dimensions 382 mm × Φ240 mm