TBBs MEZZO is a digital switch and intellient electrical system for motorhome, camper van and trailer. So this mobile allows you to:
1) Monitor how master power and other power module like TBBs inverter (if there is) is working
2) Monitor water tanks status
3) Monitor lithium battery (If its TBBs M series)
4) Control system or DC loads remotely
Its a useful tool to help you manage and monitor electrical system on your RV.
Enjoy your fun with it.