Feature: 1. MAIN USE: Guests can visit the video voice call, short time video recording with this intercom doorbell, the owner does not need to open the door to know the information of the visitor. When someone ring the doorbell, automatically catch the first shot and save the image in the cloud, where you can view the access history in the app 2. LARGE VOLUME DOORBELL RECEIVER: Anywhere to put, 433MHZ large volume doorbell with 2.4GHz wifi signal, more stable, large coverage and stay online, wake up at any time 3. SMART HOME: Open the mobile phone you can see, not only the doorbell, but also the cat eye monitoring, 24 hour door guard. Support mobile for Kement APP remote viewing, no matter how far away from home, you can also grasp the door dynamics at any time and anywhere, no one in front of the door can wake up anytime and anywhere to view 4. REAL TIME INTERCOM FUNCTION: See the people outside and instant communication, someone rings the doorbell, the mobile phone can be immediately notified in real time. You can also use the mobile phone for Kement APP to call people outside the door when you are out of the house 5. HD DISPLAY: The details outside the door are clear, the video door phone is equipped with high definition pixels and large wide angle field of view, and the picture quality is clearer and more delicate; With excellent infrared light and wide dynamic technology, can present a clear and delicate picture even in a dim light environment 6. TWO INFRARED LIGHTS NIGHT VIEWING: Wireless intercom doorbell built in two 850NM 28MIL high power infrared lights, the best night viewing effect of 1 meter, the longest distance of 3 meters, dark environment picture is still clear, bring you a full sense of security 7. LONG STANDBY LIFE: Video intercom doorbell is removable and rechargeable, built in polymer 803035/800MAH battery, dormant standby for 1 year, support USB charging, say goodbye to the trouble of frequent battery replacement 8. APP ACCESS DOORBELL RULES: 1 Main account and 8 sharing accounts, a total of 9 users can be connected to the doorbell, only 3 users can preview the screen at the same time, and only one user can talk to the doorbell at a time Specification: Item Type: Video Intercom Doorbell APP: For Kement Connection Method: WIFI Battery: 1 x 800mAh 803035 polymer lithium battery Discharge Time: Polymer battery dormant standby for 1 year Memory: 32Mb flash Sensor: 30W GC0328 CMOS sensor Lens: 100° Wide angle lens Sensor Performance: Support automatic white balance, automatic gain control, automatic backlight compensation SNR: ≥41dB Minimum Illumination: 0.8Lx/F1.4 (color mode), 0.3Lx/F1.4 (black and white mode) Night Viewing: 2 x 850nm dia 28Mil High power Infrared Lights Night Viewing Distance: 1 meter effect is the best, the longest distance is 3 meters Video Format: JPG Video Size or Frame Rate: 480P/7fps Recording Mode: Press button to trigger recording Cloud Storage Map: 5 Pictures Network Protocol: TCP, IP, HTTP, TCP, UDP, DHCP, DNS, DDNS, NTP, RTP, P2P WIFI Connection: 2.4GHz wifi, support (802.11b/g/n) Ding Dong: Supports RF 433MHZ Ding dong Storage: Support cloud storage function (without small memory card function), 3 days free cycle cloud storage Working Current: Working current 219mA, deep sleep current 10mA, infrared working current 280mA Color: Black. Package List: 1 x Host1 x Ding Dong Machine2 x Screw2 x Wall Plug1 x USB Cable1 x Install Sticker1 x User Manual