RMC-3 is the work horse of the NavLink system and is primarily suited for buoys and beacons and even lighthouses. It has the capability of accepting 4 analogue and 4 digital inputs for remote monitoring.

As with the MC-1 it is also able to accept MODBUS monitoring protocols.

It can be housed in a stainless steel or fiber glass enclose and is ideally suited to operation from a solar power or mains power system.