Welcome. You don't mention how you will provide electricity to the unit. It will come with a 12V battery (or multiple batteries) to run the 12V items such as lighting, water pump, furnace, fridge control panel, and likely some safety alarm/monitors like propane and CO. The TT's onboard converter will charge the batteries when the TT is plugged into shore power or generator. If you don't have electric hookups where you'll be using the TT, you'll need to come up with another way to recharge the batteries.
2012 Aspen Trail 2710BH | 280 watts of solar on the roof | 2x6V GC batteries | 100% LED lighting | 1500 & 300 watt PSW inverters | so far strictly boondocking