Estes são vaporizadores de umidade . Esses dispositivos são usados para coletar umidade da atmosfera que será usada como água.
Do banco de dados de Star Wars,
Found on desert planets, moisture vaporators were stationary devices that could collected moisture from even the driest of climes. Though they were stationary, they included programming that offered them a binary language that could be used to communicate with droids. On the desert planet of Tatooine, edible mushrooms frequently grew on the vaporators. For moisture farmers to make a living, they would need fields of moisture vaporators, and then security systems to protect them for those who might steal their water.
Estes são mencionados pelo tio de Luke quando compram dróides de jawas.
OWEN: I have no need for a protocol droid.
THREEPIO:(quickly) Sir -- not in an environment such as this -- that's why I've also been programmed for over thirty secondary functions that...
OWEN: What I really need is a droid that understands the binary language of moisture vaporators.
THREEPIO: Vaporators! Sir -- My first job was programming binary load lifter... very similar to your vaporators. You could say...
Veja também a mesma pergunta na SFF.