Since building in 2008, BYVision Security Science Technology Ltd., based on extraordinary product quality and strong R&D capability, has become one of the global leading CCTV surveillance equipment and solution providers,located in Shenzhen of China,Having hundreds skillful employees and tens experienced R&D engineers.We provide all types of Video Surveillance products, including IP cameras, CCTV cameras, Night vision IR Bullet cameras, Dome cameras, Wireless cameras, PTZ speed dome, Hidden cameras, Mobile Cameras and Mobile DVRs, Smart Home systems of Wifi IP Doorbell, Video door phone, CCTV Kit and Alarm KIT etc..No matter what kind of surveillance system that might be, from an easy to set-up wireless camera system with no holes to drill to a complete 4/8/16/32 channel surveillance system that you can view on your iPhone or Android Mobile Phone by Free APP, we have it all to meet all your CCTV needs!Website:http://www.byvisiontech.comhttp://www.byvisiontech.com