System Operation system Embedded Linux OS Online visitor Support 4 visitors at the same time Image Capture Image sensor 1/2.4 inch 1536p Progressive Scan CMOS Minimum Illumination 0.3~0.5Lux(color mode),0Lux(B&W mode) Lens 2.3mm F2.4 View Angle 180 degree Nightvision Dual Filter,IR-Cut,3pcs 850nm IR LED, IR irradiation distance:5~10m Video Encode format H.264 main profile@levels:4.0/Motion-JPEG Three Stream Main Stream:1536p(1536X1536)@15fps Bit Rate 128~4096kbps Maximum frame rate 15fps Image adjustment Contrast,Brightness,Saturation,Hue Audio Input Built-in -38dB Microphone Output Built-in 8Ω1W speaker Sampling frequency 8KHz Sampling Bit wide 16bit Encode format/Bit rate ADPCM/32kbps Network Ethernet 10Base-T / 100Base-TX, RJ45 connector Protocols TCP/IP,HTTP,TCP,UDP,DHCP,DNS,NTP,RTSP,P2P etc Wireless LAN IEEE802.11b/g/n Wireless LAN Frequency 2.4~ 2.4835GHz Wireless LAN security 64/128-bit WEP/WPA-PSK/WPA2-PSK data encryption Memory Socket TF Push-push socket,Maximum support 128GB Alarm Alarm Trigger Motion detection Physical Environmental Rated voltage DC12V±5% Power consumption Typical:6.24W(IR LED on) Operating condition Temperature:-10~50℃,humidity:<90% Weight Gross:TBDg(Note: in kind prevail) Package size 196X183X110mm (L×W×H)