*4.1.3.2 Final product explanation*

In **Figure 4**, the Wheelchair Adapter, with the help of the motors located in the upper rear part, allow through a slow and safe movement that the rails located on the sides raise the platform where the conventional wheelchair is located, so that at the time of the ascent and descent is left with a 90 degree angle for safety and comfort.

In **Figure 5**, you can see the Wheelchair Adapter, with the help of the complex system of equilateral triangle-shaped rims, it allows you to have a better grip on each obstacle in your environment, generating more security when moving.

In **Figure 6**, the Wheelchair Adapter is observed, thanks to its caterpillar traction system and its 45 degree angle allows generating the ascent and descent of stairs and with its sophisticated caterpillar design it allows to face any terrain.

In **Figure 7**, the Wheelchair Adapter is observed, it presents the mobility operation of the chair during the ascent and descent, as mentioned above, the prototype generates a lot of stability thanks to its caterpillar system and its triangular wheels,

**Figure 4.** *Prototype of the chair of wheels.*

**Figure 5.** *Chair of wheels with rims in shape of angle.*

**Figure 6.** *Chair of wheels with design of caterpillars.*

as well as generates security with the 90 degree position of the person by its side rails and total dependence thanks to the ultrasound sensors that identify the possible obstacles to overcome.
