I am trying to find a submersible digital thermometer with an alarm (high/low temp) that doesn't die after a few batches. I want something that I can use for water boiling and in the mash tun. I don't want to go through the side of the mash tun. Have you found any that work for the long haul? I've seen a lot of posts. They all seem to die quite quickly. What's worked for you folks?