The GAI series amplifiers are actually two amplifiers in one. With the simple flick of a switch, it can be changed from a 802.11g 1W amplifier to a 802.11g 5W amplifier (HA240105GAI) or a 802.11g 5W amplifier to a 802.11b 10W amplifier (HA240510GAI). This feature is ideal for co-located equipment installations.