Transmitters of electronic signals; vehicle radios; transponders, gauges; measuring instruments, counters; thermostats, gas testing instruments; tachometers, optical sensors; pressure sensors, timing sensors; proximity sensors, oil level sensors; liquid level sensors; temperature sensors, acceleration sensors, pollutant sensors; touchscreen sensors; ultrasonic sensors, coolant-temperature sensors, electronic sensors for measuring solar radiation; vibration sensors for installation in windmill housings