ACU Rite, anyone use these?

I think this thing is wacky. this is my 3rd grow, i have a grow cabinet inside a closet where the ac unit is and it's very cool inside the closet, i have 2 out takes for heat and i'm only using 4 24 watt CFLS at the moment, yet the heat is hitting 90.

My first grow i did during the winter and the acu rite would never get below 79. well i decide to stick the meter right on the intake fan and it's still hitting 90, yet feels no where near 90, the outside of the cabinet is cool to the touch.

Anyone use these and find it's not reading temps right.

This thing can't be right.

Yea, I use one of those. I have used it on previous grows too with no problems.
Maybe you wanna go get another thermometer and check it.