Control valves for regulating the flow of gases and liquids; Temperature sensors; Pressure sensors; Oil level sensors; Acceleration sensors; Coolant-temperature sensors; Safety sensors, namely, carbon monoxide detectors, smoke detectors, and combination carbon monoxide and smoke detectors; Gas sensors for measuring gas concentration; Device for testing the function and effectiveness of smoke detectors, carbon monoxide detectors and heat detectors featuring an aerosol spray; Sensors for the de...