The Smart City Card allows you to make a full-fledged Smart City Solution with your CloudGate Gateway.
The card has the potential to connect up to 8 analog sensors (0 - 4.8V input) for air quality monitoring, I2C sensors for other sensors like humidity, lux, barometric pressure, a Street Light (0-10V) output, a digital output for an alarm or indicative light and a microphone input to listen to environmental sound. The card also has 2x USB slots that would even allow to add a Wi-Fi or Bluetooth USB dongle to do human traffic counting for example.