Hi David. If you want to put a thermoelectric module on a
RMH, you need to put a heat sink under it. The high heat of the RMH has the potential of melting the wires of the module, unless you get a module that is made for high temps. Are you doing this to have a small electrical change going to a bank of batteries, or are you wanting to run a fan within the RMH? Anyway Good luck.