• The ACU-A20-S Antenna Control Unit (ACU) is part of the complete RFS AISG compliant Optimizer RT® remote antenna control system. The ACU-A20-S is a direct replacement for the ACU-A20-N. With its smaller and more ergonomic form factor, installation is easier and more cost-effective especially when using multi-band antennas with several ACUs. •The Optimizer RT® remote antenna control system permits accurate antenna tilt operations to be conducted - without riggers or crane equipment - either from the tower base or the network management center. FEATURES / BENEFITS • Compliant with AISG standards • Enables remote electrical tilt of antennas • Direct replacement for the ACU-A20-N in a smaller size • Travel time <30 seconds typically