Despite its high sensitivity, the Smart Carbon Monoxide Sensor is also suitable for the use in rooms with high temperature fluctuations. Upon even the slightest emission of carbon monoxide, it sends an alarm to the residents’ smart phones. Furthermore, the sensor activates connected fans and the ventilation system. Thus, rooms can be aired in time so that humans cannot be harmed by the colourless and odourless gas. When several CO-detectors are installed in the house, they will sound an alarm almost simultaneously within a minute.