Information about cooler system for M6E nano.

Hi, im using the m6e-nano rfid reader, I need to make a cooler system for the sensor. What do you suggest considering that i want to put my sensor in a case ( look like the computer’s one). It necessary a heatsink with or without a fun?

I’d start with a heatsink on the bottom of the board and see how hot the module gets. If it gets too hot with a heatsink alone, you will need to add a fan to blow cool air over the heatsink.