Purpose of low-humidity crisper?

My refrigerator has two crispers, with humidity sliders from low to high. A high-humidity crisper is pretty easy to understand: it traps the moisture inside, preventing leafy greens from wilting. On the other hand, when you slide it to low humidity, a vent opens allowing air to pass through. How is that any different from storing food outside the crisper?
Best Answer
If you set it to high humidity (no air flow) and add plenty of water fruits, f.e. water melon halves, then moisture will gather on the bottom of the box, where it leads to mold, where the fruits and vegetables touch it.
So you keep the slider somewhere where you have great greens/fruits without too much moisture on the bottom and sides of the box.
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Quick Answer about "Purpose of low-humidity crisper?"
A crisper drawer set to low-humidity (sometimes labeled the “fruit” setting) lets out some of the ethylene gases that lead to faster rotting, thereby keeping these fruits and vegetables fresher, longer.Should the crisper be on high or low humidity?
As a general rule of thumb, use the low-humidity setting for anything that rots easily. That means apples, pears, avocados, melons or stone fruits. The high-humidity drawer is great for anything that wilts\u2014think thin-skinned vegetables like asparagus or leafy vegetables like greens.What should I put in my low humidity drawer?
Foods that fare best in the low-humidity drawer include apples and pears, peaches and nectarines, cantaloupes and honeydew melons, kiwis and avocados.Should humidity control be high or low for vegetables?
Essentially, veggies like high humidity and fruits like low humidity. Leafy greens tend to fare best with higher humidity and the coolest conditions. Lettuce, spinach, collard greens and even green onions belong in this group.What gets stored in low humidity?
High Humidity \u2013 store leafy vegetables such as spinach, lettuce and thin-skinned fruits and vegetables like strawberries, raspberries, and grapes. Low Humidity \u2013 store thicker-skinned fruits and vegetables like onions, peppers, and tomatoes.How to Use Your Crisper Drawers In Your Fridge Correctly
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