Smart Doorbell,Smart Wireless Remote Video Doorbell Intelligent Visual Doorbell,PIR Motion Detection,Home Intercom HD Night Vision Wifi Security Door Doorbell Feature: Easy installation: download the APP and connect it to the doorbell. No wires and cables are required.No matter where you are, You can the information Use on demand video to view visitors and talk to them directly through smartphones or the Internet, which means you can watch 720P HD real time video access,You can live stream videos via mobile phones and smart devices on the front porch at any time Two way audio: communicate with visitors through two way audio,With noise cancellation microphone. It is weather ,You can monitor your front door by watching real time video As long as our smart PIR action is detected, the camera will send you an alert through our APP The sensitive time is Adjust to start loop recording,Expired videos will be deleted automatically Infrared night vision: The video doorbell protects your home day and night through infrared night vision.Keep your home safe at night. No matter where you are. Design the area you want to monitor,You will receive an alert whenever someone enters the designated area. Day or night,Rain, it can and record videos at any time Motion detection: You can see clearly on every face at the door, don't be afraid to open the door. Real time alarm, 120 wide angle lens, 720p HD video, two way conversation, remote wake up. At the same time, you can also capture photos or video clips at any time and store them in your phone There are no restrictions on using a smartphone to enter the doorbell.So you can let the whole family supervise your home Product parameters: Product name:Door bell kit Color:Black Memory: 128MB flash Sensor:720p gc1054 CMOS sensor Lens: 120 wide angle lens Sensor performance: support automatic white balance, automatic gain control, and automatic backlight compensation Signal to noise ratio: 39db Minimum illumination: 0.8lux/f1.4 (color mode), 0.3lux/f1.4 (black and white mode) Night vision: double filter automatic switching, 6 850nm 28mil high power infrared lamp Night vision distance: 5 meters is the, and the longest distance is 20 meters Motion detection: PIR motion detection, sensitivity Adjust detection distance (triggered immediately within the effective distance), the is 2 meters, and the longest is 4 meters (affected by ambient temperature and light) Human shape recognition: if a human shape is detected, it will automatically record (if no human shape is detected, it will automatically go to sleep state) Video format: MP4 (H.264) Video size / frame rate: 720p/20fps Video recording method: 1. Motion detection video recording; 2. Press key to video recording; 3. Preview video Duration of video recording: 1. When mobile detection starts or rings the doorbell when visiting, 15 seconds of video will be recorded at the same time. The doorbell will automatically enter the sleep mode. entering the sleep mode, mobile detection starts or rings the doorbell, and then 15 seconds of video will be recorded. 2. The duration of preview recording of mobile app is limited to 3 minutes each time. Stop recording 3 minutes Battery type / capacity: 18650 cells, 2600mah*2=5200mah (Not include) Battery discharge time: sleep for 2 months, record 30 15 second videos every day, and last 45 days Network protocol: tcp/ip/http/tcp/udp/dhcp/dns/ddns/ntp/rtp/p2p WiFi connection: 2.4GHz WiFi, support (802.11 b/g/n) Ding Dong: support RF 433MHz Ding Dong Storage: support storage function (hardware without card function), 3 day free circular storage Working voltage: 3.7V 18650 lithium battery (Not include) Working current: working current 250mA (MA), sleep standby current 0.8ma (MA) USB charging voltage: 5V / 1.5A AC power supply / charging: external AC 12-24V Storage temperature (): 0 ~ 50 Operating temperature (): ? operating temperature: -10 ~ 70 , working humidity