I just use a Digital Thermometer and Hygrometer from Lowe's. Does the same thing but I got it on sale for $5.99. Maybe take a look there. Here is a link to Amazon but it is $24.99 there...
I had something similar happen to me (Not Kammers). I bought a small, cheap Bird Cage to use for a few days from my local Wal-Mart and it worked perfect. It even came with a small feeder dish and a dowel, then I just placed some fake plant vines inside.
I can even use it as an outdoor enclosure...
Is it bad to have too high a humidity? Mine is always in the 70-85% range. Should I cut down on misting or remove a live plant?
Screen cage. 4 month old Panther.