Features: Support WIFI 2.4GHz, IEEE802.11b/g/n, no need for any wire. HD 720P image resolution with 166° wide viewing angle enables you to acquire a clearer and broader perspective. 6 Infrared LED lamps with IR-CUT filter mode automatically switches via optical sensors, so as to monitor and capture images in low illumination environment. Two 18650 batteries power supply, ultra low power consumption, long life time for 5 -10 months. PIR motion detection and anti tamper alarm function, the doorbell is able to record or capture photos automatically and will send the alarm information to your phone once detecting moving objects. Support mobile phone monitoring (for iOS, for Android). While finding a visitor outside of the door, you can look there, make a video and audio call and record a short video. Motion detection sensitivity are adjustable for false alarm avoidance and power saving effect. The doorbell will automatically capture a video and upload it to the cloud storage when a guest rings it. Super WIFI transmission penetration technology. Built-in super WIFI transceiver module can cope with obstacles simply such as stainless steel doors, wooden doors, iron doors, etc. Two-way voice intercom, built-in speaker and microphone guarantee clear voice intercom with no noise interruption. Specifications: Condition: Brand New Material: ABS plastics Color: Shown as picture Optional Type: WIFI Doorbell, WIFI + 1 Dingdong, WIFI + 2 Dingdong Optional Plug Type: EU 90-260V , US 90-260V, UK 90-260V Main Control Chip: Hi3518EV200 Sensor: HD COM Ssensor 1/4" OV9732 Lens: Full 3G1P super wide angle lens Lens Angle: 166° wide angle Video Stream: 1280*720/30fps640*360/30fps CMOS Performance: Support automatic white balance, automatic gain control, automatic backlight compensation, digital wide dynamics System: LiteOS Standby Time: About 5-10 months (10 times PIR wakeup per day , 15 seconds each time) Day and Night Conversion: Dual filter automatic switch Infrared Distance: 850nm infrared, effective distance 5m Number of Infrared Lamps: 6 Network Configuration Mode: One button WIFI configuration + sound wave configuration PIR Human Detection: Support PIR detection wakeup Cloud Storage: Support, seven days of free cloud storage are available TF Card: 8G/16G/32G (not included ) Audio Coding Standard: AAC and G.726 Audio Input/Output: -38dB microphone / built-in 1 speaker Recording mode: manual remote wake-up recording, PIR alarm recording WIFI: 2.4GHz Network Protocol: TCP/IP, HTTP, TCP, UDP, SMTP, DHCP, DNS, P2P Wireless: WIFI802.11b/g/n wireless network Passive Human Body Infrared Detection: Support Adaptive Code Rate: Support Two-way Intercom: Support full-duplex real-time call Sleep Time: 30 seconds Remote Wakeup: Support PIR Wakeup: Support three wakeups of high, medium and low sensitivity Mobile Client: Ubell, for iOS10.0, for Android5.0 or above Power Supply: Two 18650 batteries ( not included ) Working Temperature: -10 ° C ~ +50 ° C Working Humidity: ≤80%RH Package List: 1 * WIFI Doorbell 0/1/2 Dingdong Doorbell ( Optional ) 1 * Screw Bag 1 * User Manual