1.Please note: This doorbell is a Battery Powered doorbell and don't support 5G WIFI 
<br />2.Video Of Installation https://www.youtube.com/watch?v=_u-b9JF81_Q 
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<br /> Rechargeable, 3000MA Built-in Battery Long Standby And Automatic Infrared Switch With Smart Low Consumption:Built in 3000MA high quality lithium battery, 8 months long standby, WIFI network connection, low power consumption
<br /> 2-way intercom,support 4 people simultaneously online and have a video call with visitors:Support monitor function through mobile device;voice loudly among outdoor unit and mobile 
<br /> IR-CUT: infrared night vision function automatic switch, light shortage, automatic start ray compensation, realize 24 hours low power intelligent monitoring;
<br /> Real Time Duplex Intercom Without Delay Almost NO Delay of visitor call push notification according to network speed.
<br /> Multiple functions: video intercom, unlock, remote surveillance, motion detection, image capture, video record, tamper alarm, night vision and visitor message.
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<br />·Specifications:t
<br />Infrared lamp:2PCS
<br />Infrared distance:3-5 meters
<br />Power Standby: 0.1 mW  Operation: 1.8 W
<br />Size:155*95*55 mm
<br />Resolution:1280*720
<br />Viewing angle:120° super wide angle
<br />Supported protocol:ONIF, DCT/IP, UDP, SMTP, DHCP, UPnP, P2P
<br />Voice:Intercom
<br />Compression format:H.264
<br />Camera:OV9732
<br />Frame rate:30 frames
<br />Lens:2.8 mm
<br />Night vision:Clear
<br />Network:WIFI
<br />Waterproof grade:IP65
<br />Battery:3.7 V 3,000 mA
<br />Temperature:-10-55 
<br />Humidity:10-95% RH
<br />Weight:315 g
<br />Function:Real-time call, unlock, take photos, video, recording
<br />Solar battery charging:Optional
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<br />·Installation attentiont
<br /> Avoid sheltering or covering camera's light sensor;t
<br /> Protect camera from direct sunshine;t
<br /> Ensure correct wiring otherwise device can't work normally.t
<br /> Product weight: 0.62 kgt
<br /> Product Size(L x W x H): 13.0 x 12.0 x 4.0 cm / 3.9 x 3.6 x 1.2 inchest
<br /> Package Contents: 1 x WiFi Doorbell, 1 x Power Supply, 1 x Terminal Wire, 1 x Unlock Wire, 1 x Bag of Screw, 1 x English User Manual