Truma AquaGo, what's this tool on inside of door cover?

[cowgs]

Hello,

Wondering if someone could explain to me purpose of the yellow device that's on the inside cover of my Truma AquaGo water heater door?

I've looked through the manual and don't see any mention of it.

Picture attached.  The yellow device (tool?) is removable.  

Thank you,

Craig / 2020 Elite II Hull #612

IMG_8917.HEIC

[tallmandan]

Hi Craig,

That is the vent plug for use with the antifreeze kit.   Here's a video that explains its use...