This is the RTD relay mux board for the Low Energy PIU. This board contains the reed relays which can switch inputs from up to 16 RTD inputs to the LEPIU CCFA. The LEPIU can accept inputs from 100 ohm platinum RTDs.

WPC has put a lot of effort into improving the reliability of these mux boards.

This relay board is used with Honeywell's 51301882-100 terminal board.