Description :  VStarcam C95 WIFI Doorcam 720P Doorbell Handheld Two Way Audio Video Mobile View IP Indoor Camera  Make Video phone call with visitors、 and short time recording、 known visitor information without door open.  Features :                                Specification :                System         OS         Embedded Linux OS                System security         Three-level user authority management                Online visitor         Support up to 4 online visitors simultaneously                 DDNS         Built in free DDNS               Processor         Hi processor、 built in ARM926 @Max. 440MHz and high-speed video co-processor.               Collection          Image sensor         4-inch 720p progressive scan CMOS sensor                 Sensor          support AWB、AGC、BLC                 Sensor size         3.84mmx2.16mm                SNR         ≥39dB               Minimum illumination         0.8Lux\/F1.4 (colourful model )、 0.3Lux\/F1. (B&W mode)                Lens\/viewing angle         1.7mm@F2.4 \/96.96\u02da                Night vision         Dual IR CUT Filter auto switch、 1pcs 850nmΦ28mil super power LED、 5m IR distance.               IR-Control         IR turned on: night vision view enabled、 infrared Ray、 ICR auto detect.     IR turned off: night vision disabled、 infrared ray off、 ICR stay in day view mode.                Video         Compression standard         H.264 Main Profile\/H.264 Baseline Profile\/MJPEG\/JPEG Baseline               Video coding process         Multi stream:720P\/24fps+VGA\/30fps+QVGA\/30fps+720P @1fsJPEG capture               Resolution         720p\/VGA\/QVGA               Bit Rate         CBR\/VBR、 output bit rate range: 128-4096kbps               Frame rate         30fps\/25fps (720p)               Image adjustment          Brightness、Contrast、 Saturation are adjustable.               Audio         Input         1 Channel Internal -48dB microphone               Output         Internal speaker(8Ω1W)               Sampling frequency\/       bits wide         8KHz\/16bit               Compression standard \/   bit rate         ADPCM\/32kbps               Network         Protocol         TCP\/IP、HTTP、TCP、UDP、SMTP、FTP、DHCP、DNS、DDNS、NTP、UPnP、RTSP、P2P、etc.               WiFi         802.11b\/g\/n               Network security         one key congratulation               Wireless Connection         AP hotspot               Record         Recroding mode         motion detection recording、 doorbell button trigger recording                Storage         SD card storage               Physical indicators         Rated Voltage         DC5V±0.3V\/2A               Power supply         Mciro USB interface 、power supply 5V \/ 2A