Apparatus for testing gas, liquids and solids; Automotive, industrial, construction, locomotive, aviation, navigation and marine safety-warning lights, namely, strobes, rotating lights and bar lights; Current converters; Drive invertors; Electric connections and connectors; Electric sensors; Infrared sensors; Optical sensors; Photoelectric sensors; Sensors for determining position, velocity, acceleration and temperature; Smartglasses; Smoke detectors; Solenoid valves; 3D scanners; Electronic ...