Gas hose 1/4" left-hand thread / quick connector end, length 150 cm, frost resistance - 30°C .

1/4" left-hand connection with nut for grill and quick connector at the other end for gas intake from quick connector housing. Frost resistance - 30°C.
For indoor installations, the maximum length of the LPG hose is 1.2 meters.
The inner diameter must be 10 mm (VNa 858/2012 annex, points 4 and 6).

There is no mention of the length and inner diameter of the LPG hose for outdoor use .
The procedure according to so-called good practice is to use hose lengths that are necessary for the application and to avoid using hoses that are too long.
There are many different types of awnings.

It can be considered a clear view that, from the point of view of using LPG, the so-called awning solution (only the top is closed and otherwise all sides are open) can be considered outdoor space.
A full-size Caravan awning is inconvenient in terms of using LPG.
The provision on the placement of operating equipment (Annex 2 and 3 of VNa 858/2012) takes the location as the starting point.
Section 2 deals with rooms in buildings, so it is not applicable here.
Section 3 requires: Operating devices must be equipped with a flame monitoring device.
A flame monitoring device is not required for appliances intended exclusively for controlled outdoor use.
This can therefore be applied to this LPG grill for Caravan use.