The HAO15SIP Hi-Gain Outdoor 15dBi Omni-Directional Antenna Kit is a heavy-duty, weather proof, high powered antenna for extending the range of your 802.11b and 802.11g WiFi devices. Whether your application requires extending a wireless signal from one building to another or simply from one end of a house to the other, the Hi-Gain Directional Antenna Kit from Hawking is the perfect solution. The power rating of WiFi antennas is measured in terms of decibels (dBi). The HAO15SIPboosts the antenna power of standard antennas from a minimal 2dBi to a staggering 15dBi. This results in extended wireless distances of up to 2 miles.* Whether extending the wireless network from one corporate building to another, or simply from the front house to the back house, the Outdoor Antenna Kits provide wireless users with a high powered solution to extend their wireless network.