RuPanel LTE High Power directional MIMO 2×2 LTE antenna works with all LTE/4G/3G/2G modems with SMA connections. For 4G LTE mainly, but is compatible with 3G and 2G as well. The antenna improves the signal in rural/suburban and locations where the mobile signal is weak. The antenna is used on most popular LTE bands. Can be installed on the buildings (on a pole or on the wall)