Neutron is an economical single-door mini controller created for smaller systems. It can handle both in and out readers using Keri’s exit readers in parallel with its standard NXT readers. Eight Neutron controllers can be connected together via time-tested RS-485 communications. It is designed to exclusively run on Keri’s simplified graphical interface, Visual Doors, yet it carries nearly the same powerful features as the company’s NXT controllers. Neutron is available on the shelf, installs easily without knowledge of networking, employs traditional and well-understood technology and is simple to program.
Keri Systems | http://www.kerisys.com