The iBOX is the central component of the iEFIS system. It provides a large amount of interface connectivity and connects to the panels via a small coaxial LAN cable.
Most use a single iBOX, but it is possible to use two in a “master” and “hot standby” topology if additional redundancy is needed.
The new V2 iBOX uses a new CPU card and is built with new pressure senders for altimeter, airspeed, and AOA. It is largely compatible with the iBOX V1. Besides new pressure senders, all RS232 ports are now high speed capable (only ports 1 and 2 are high speed on the V1). A rechargeable internal battery replaces the lithium coin cell used previously.
Note: iBOX is not required in iEFIS "Lite" systems
