CPU RTOS+DSP SoC SENSOR 1/ 1 Mega Pixels Progressive COMS Sensor LENS Optical glass lens,120 view angle Operating OS RTOS operating system Min illuminance 1.0Lux color,0.1 Lux B/W Video Resolution 1280x720p Video Codec H.264 Baseline profile Frame Rate 1~25fps Adaptable accordance to connection bandwidth Audio Codec G.711A Bitrates 100Kbps-400Kbps OSD Date ,time and user defined text Audio Input /Output Built-in Mic and Speaker. Support 2-way voice talk with DSP echo cancellation Network IEEE 802.11b/g/n WIFI Local Storage Support TF Card up to 32GB Cloud Storage Available ( Recording 7 days) Internet NAT Via P2P or Server relay transmission. Others 433Mhz For Ding Dong device High Clarity Microphone Speaker Micro Sd Card Slot (SD card not available) LED indicator light Water resistance push button Doorbell anti-tamper alarm back plate IR LED (4 pcs) PIR Sensor (15 seconds lurking alarm notification) PIR sensitivity adjustable Notification Push notification for iOS and Android mobile devices Power Input Built-in Lithium ion Battery (3000 mAh) Power Consumption Standby: 10uA (with PIR feature switch off) . Operating: