The TCL 40-32D29B-KEA2LG IR Remote Sensor Board is a replacement part specifically designed for TCL televisions. It is compatible with models such as 55S401, 55S403, 55S405, and 49S325, manufactured in 2018. This IR sensor/power button board, located in R31, allows for remote control functionality and power button operation, ensuring a seamless viewing experience for TCL television users.