SYWIFI001 DoorBell Wireless Smart Video Doorbell Home Improvement Visual Door Ring WiFi video doorbell connects to network via wireless router or network cable. ; Mobile devices include smartphone or tablet, could connect to the doorbell. ; After the visitor rings, mobile devices could interact with doorbell via real time video and audio, user can view the visitor, then decide to whether intercom or open the door etc. ; WiFi doorbell support PIR and motion detection alarm, with IR night vision, 12V power supply. ; 2.4G Wifi, real time viewing, max to support 100M broadband, support Android and IOS operation system. ; Multi doobell and multi mobile device can work at the same time . ; With CE and ROHS certificate.