Neato Robotics is a robotics company located in Newark, California. Their product, the Neato XV-series (and as of 2014 the expanded BotVac series) robotic vacuum cleaner, began selling in 2010 for US$399.00. The company has around 65 employees, and raised over $60 million in funding over several rounds. The design work is done in California, with contract manufacturing in China. Unlike the Roomba vacuum cleaner, which goes randomly around a room, the Neato robot travels in straight line patterns partially overlapped, with the help of a laser range finder that scans around in a full 360° circle, and the SLAM algorithm that allows it to map the room being vacuumed while it is completing its task. The Neato XV robot is able to return to its home base and charge itself when running out of energy, and has sensors that prevent it from falling off stairs. In case the robot is used in a floorplan larger than it can cover with one battery charge, the robot is able to continue cleaning from where it left off the previous session, after recharging its batteries.