Fluid Wire Technology enables the construction of fully-electric force-controllable robotic arms with electric motors and sensors located in a sealed remote actuation unit. The power from the motors is transmitted to the robot joints via a patented high-efficiency transmission system, known as “Fluid Wires. Delocalizing, sealing and/or shielding the actuation unit makes the system harsh-environment-proof without requiring additional structural complexity and without tradeoffs on performance. The robots have no limits when interacting with water, high-temperature, pressurized environments, vacuum, reactive means and explosive atmospheres. smooth and efficient operation.