Air-fuel ratio controllers for internal combustion engines; Air/fuel ratio gauges; Electric switches; Electric circuit switches; Electrical switches; Pressure sensors; Sensors and detector units for use in controlling the actuation and operation of automotive safety apparatus and equipment; Sensors for determining position, velocity, acceleration and temperature; Sensors for the determination of temperatures, positions and distances; Switches, electric; Acceleration sensors; Automotive measuring instruments, namely, water temperature gauges, air fuel/ratio gauges, boost gauges, vacuum gauges and exhaust gas temperature gauges; Coolant-temperature sensors; Electric sensors; Electric, electronic, or electrochemical oxygen monitors and sensors for environmental use; Electronic devices for activating and resetting TPMS (tire pressure monitoring system) sensors; Electronic motor vehicle ignition tuning kits comprised of an electronic control unit that monitors engine performances and delivers re-calculated sensor values to the original engine control unit to increase engine performance; Gas sensors for measuring gas concentration; Keyless entry system and keyless ignition switch system for automotive vehicles comprised of a microprocessor, electronic signal receiver, and keyfob with electronic signal transponder; Liquid level sensors; Motion sensors; Motion recognizing sensors; Oil level sensors; Optical position sensors; Parking sensors for vehicles; Piezoelectric sensors; Pollutant sensors; Pressure switches and sensors for monitoring, controlling, and switching hydraulic or pneumatic systems; Temperature switches and sensors for monitoring, controlling, and switching hydraulic or pneumatic systems; Timing sensors; Vehicle safety equipment, namely, back-up sensors and cameras