In the past few years, we have covered plenty of cool robots by SuperDroid Robots (SDR). Their security and patrol robots are also worth a look. They are capable of detecting objects and people, reading vehicle license plates, and integrating with your home security systems.
These robots have a weatherproof chassis. It comes with a 360-degree surveillance camera system, 4G/WiFi connectivity, ROS SLAM navigation system, GPS, and SMS/email notifications.