How do you use a Tek helmet?

How do you use a Tek helmet? The Tek Helmet has different modes that can be switched by long pressing R, the three different modes below are cycled through. Pulse Mode highlights creatures and other survivors around the wearer in a specific color to show the relationship to the wearer.

The Tek Helmet has different modes that can be switched by long pressing R, the three different modes below are cycled through. Pulse Mode highlights creatures and other survivors around the wearer in a specific color to show the relationship to the wearer.