Thermoelectric Coolers

[Wharf Rat]

Thermoelectric systems (or any other heating / cooling system) in a humidor give you precise temperature control. But, they make it much harder to maintain the desired relative humidity. So, you’d probably also need a humidification system that runs on a humidistat.

How big a humidor are you talking about? You can buy a small thermoelectric wine cooler for less than that.