Will this measure the temperature of a room?

It will measure the temperature of an item IN a room, but not the ambient temperature OF the room. For example, I just measured the wall in my room, behind the computer, and got a reading of 64.9 (F). I then measured the temperature of a wooden leg of my computer table, and got a reading of 64.5. So, very close. That said, there is no way to get the "general" air temperature within a room, because you have to point the "beam" at a specific target.

This item measures the temperature of specific spot and not a room