Product review (5 stars): Really easy fix to frustrating ice maker sensor failure.  Worked!
Purchased for a Whirlpool Side-by-Side refrigerator model GC3SHAXVB00 with a failed ice maker sensor.  Needed to replace Whirlpool OEM Part #W10757851.  The new boards arrived right away for a very low cost compared to buying direct from Whirlpool.  Both the transmitter and receiver boards fit easily.  Only requires a phillips head screw driver to take off the plastic covers and then a little care to unplug the connectors from the old boards and plug in the new boards.  The instructions that came with the boards were okay.  They clued me into the fact that as soon as the new boards are installed, the ice maker began a "harvest" cycle until it makes new ice.  This took a while - a whole day.  Boards have been working for more than a month now (June 2018).  Very happy with the fix.