They work autonomously, diesel engine and electric motor, with batteries, or with a single-phase socket outlet.
They can also easily transfer off-road and on slopes such as: ramps of garages, staircases, and so on. They pass through a normal door and operate in enclosed and crowded environments, without noise or exhaust gases. They stabilize easily in tight spaces, on irregular and steep slopes, on delicate and low-capacity floors. They are easy to use and safe.