Founded in 1854, O'Fallon's namesake comes from Colonel John O'Fallon who was a wealthy gentleman from St. Louis. In downtown O'Fallon, a Baltimore and Ohio Railroad railroad depot was built, which helped put O'Fallon on the map.
â¢ Transducers and sensors are physical devices that are used in electrical, electronic and many other types of gadgets and appliances. â¢ Transducers are used to convert one energy type into another while sensors measure energy levels and convert them into electrical signals that can be measured digitally.
Current Sensors and Current Transducers. Our Current Sensors and Current Transducers are perfect for monitoring current loads on pumps, driving fans, blowers, heating coils and more. At Johnson Controls, we design each Current Sensor and Current Transducer to operate non-intrusively and detect the currents flowing through cables and wires. Models that feature command relays monitor currents and help facilitate motor starting as well as motor stopping.