Same light. Cloudline T6. The T6 has hi/low temp and humidity alarms. It's what was recommended by SmokinJoe on Z-labs. I'm real happy with both the light and exhaust system. Recently had an issue and I re-did my wiring. Zip tied things up better. My temp/rh sensor was moved a little. Not much. Reads a few degrees cooler now. Which one's correct? Did some searching and you can justify putting that sensor wherever you want. Mine is about 6" above the canopy, but not directly below the lights. Another on the back wall in the tent. Gives me a range. As long as it's not too hot or cold for too long,I won't chase temps. My tent is in a metal shed in the direct sun. Instead of chasing temps, I got a couple sheets of 1.5" insulation. Works great. Going to help when it gets cold.