Meet the NERVA XX: a multipurpose robot capable of observation, mapping, detection, and intervention. It has swappable payloads, so you can adapt it to all kinds of missions. This robot weighs less than 20kg. It has max speed of 5km/h. It lasts up to 4 hours on battery.
This kit comes with a handheld controller, robot charger, antenna, rugged case, and everything you need to get started. The above video shows it in action.