Great to see you on the Portal.
That's their shower/hot water heater. The tent heater was off the market for a redesign, last I researched it. And the Zodi web site still says it's not available. I sold my used one in preference to a quieter catalytic.
I just talked to a guy at Zodi and he said they are planning on releasing the new model in mid March. 3wks to late for my camping trip.