AMAG Technology offers two output controllers for the Symmetry M2150 MultiNODEs. The products provide increased input and output capacity. One model offers four inputs and eight outputs and another model offers four inputs and 24 outputs. Each of the inputs is configurable for two, three, four and six states. The Symmetry M2150 8DBC controller configures up to 16 readers with additional 8DBC door controller and manages 250,000 cardholders. Symmetry SMS users can network up to 32 controllers on a chain.