Thanks for pointing that out I will most likely get the T10. How exactly is the RHP used in a cage like that? Or does it go on the outside? How does it attach? Where would I put the probe for the RHP? I have been using the temp gun pointed at the substrate and about 1/4 inch away from it. I will go home and measure it on the glass. It's so much better now that I know my snake won't cook when I'm not home lol.