The INTELLINET NETWORK SOLUTIONS High-Gain Omni-Directional Antenna is used to extend the range of coverage for the wireless network. It requires an access point or wireless router with a reverse SMA connector, both of which are sold separately and are available through your INTELLINET NETWORK SOLUTIONS dealer.* Typically installed upside down from ceilings or on a rooftop, this waterproof antenna is ideal for point-to-multipoint coverage for wireless 802.11b/g or 802.11n devices.