Reports the state of this EPC power strip's two fuses as a bitmask - bit 0 for Fuse1, bit 1 for Fuse2 - packed into an integer from 0 to 3. Admins decode this value to see at a glance whether either protective fuse has blown, since a blown fuse means the associated outlet group has lost power protection or power entirely. A reading of 1 (bit 0 set) tells an admin Fuse1 has tripped while Fuse2 is still intact, so they'd check the outlets wired to the first fuse circuit.