It’s Continental’s intelligent sensor, barely bigger than a matchstick.
It can be fitted in the bumper, behind the radiator grill or in the outside mirror casing. Safely enclosed in a robust plastic sheath the size of a fountain pen cap, the sensor essentially consists of two hair-thin wires, connected to a head made of sintered ceramic and magnesium, chromium, copper, nickel and iron oxides.
Because the electrical resistance of this mixture of materials drops as temperatures fall, intelligent electronics can work out the corresponding temperature readings quickly and accurately.
Continental‘s sensors react extremely quickly and sensitively. Individual measurements are taken at intervals of under twelve seconds with the ability to detect differences of less than 0.3 degrees.