They are not digital and have a track record of not lasting. I got one with a snake I bought and was using it until my Herpstat arrived. It failed before my unit arrived. Now the previous had it a couple years so it survived awhile but I have yet to have a Herpstat fail. It is not the same caliber of tstat as your collection. You are no novice so don't use the entry level gear.

When you look at how much money you have in snakes but how little money you have in temperature control its to far off. Certainly a collection worth over a thousand dollars is worth a couple hundred dollars of tstats.