Eaton MTL4511 Switch Proximity Detector Interface

The MTLx511 enables a safe-area load to be controlled by a switch or
proximity detector located in a hazardous-area. When selected, open
or short circuit conditions in the field wiring are detected by the linefault-detect (LFD) facility and also indicated on the top of the module.
Phase reversal for the channel is selected by a switch on the side of the
module and output is provided by changeover relay contacts.