It sort of reminds me of a drawbridge. You climb in bed and drag the triangle in after. Presumably if you get up in the night you throw the triangle at your sleeping partner as you exit the bed.

Having reread this thread we should perhaps make it clear that the 535 compressor fridge is 12 volt, not 240 volt and therefore does not need a mains hook up to operate, just a 12 volt battery. However as the battery will need charging it needs either a mains hookup or solar panel to keep the battery topped up.