It provides up to a 5dBi gain (vs. the 2 or 3 dBi standard aerial supplied with the product). The ANT-1205 can increase coverage in your environment creating a stronger signal for your WiFi coverage. A high-gain aerial achieves this by creating a narrower and therefore more concentrated radiation pattern. It is still an omnidirectional aerial i.e. signal radiates in all directions (360 degrees) perpendicular to the aerial's length. The ANT-1205 is supplied as a pair of antennas ideal for most DrayTek wireless access points and wireless routers. The ANT-1205 is a dual band aerial so can be used for either 2.4Ghz or 5.8Ghz operation or both simultaneously. It is also suitable for 802.11ac operation (5.8Ghz). The aerial can tilt at its base to allow for optimum coverage/spread or to allow for router wall mounting.