This Anlink 7dBi dual band wifi antenna extension cable with magnetic base is used to strengthen wifi signals to the NVR for your wireless CCTV cameras when the wifi signals weaken because of long distance or obstacles. With a length of 10ft/3m, it is more flexible for your application and installation. With a magnetic base, it is easy to mount or install on any metal surface, ceiling, walls, etc. And the antenna is removable from the magnetic base. It is well compatible with Smonet/OOSSXX/ZOSI/ANNKE/Anran brand NVR systems. And with copper core, the antenna extension cable is of high quality and more durable for use. Anlink provides a 30-day money back, 1-year warranty and lifetime technical support. Package Included: 2 pack 10ft 7dBi dual band wifi antenna extension User manual Warm Tip: If your camera is placed on the outside, please don’t put the antenna cable outside. Or the reception of wifi signals will be blocked.