Series 154M - mRFRM (Multiplexed Rear-fed Fuse and Relay)

The multiplexed Rear-fed Fuse and Relay Module (mRFRM) is an enhanced version of the Eaton Rear-fed Fuse and Relay Module (RFRM) as it has a Controller Area Network (CAN) interface and rear fed sealed connectors. The mRFRM communicates with other devices on the vehicle’s CAN bus using the SAE J1939 protocol and can be part of a multiplexing system that eliminates the need for individual connections between switches and loads. The mRFRM works by receiving messages to turn its relays “on” and “off,” and by sending messages indicating the state of its monitored components.