A cooling device comprising: at least one heat exchanger whereby heat is transferred from the environment to the refrigerant fluid and; at least one sensor which is used to measure the surface temperature of the mentioned heat exchanger; a sensor holder which is manufactured from a sheet material with a proper contour, which is ductile enough to be cut and folded and which is so rigid to squeeze and clamp the sensor or the heat exchanger and comprising: a body whereby heat transfer is achieved as it touches the heat exchanger; at least one flap which is formed by cutting the said sheet material along certain cutting lines and folding it along certain folding lines, such that it extends at a certain angle with respect to the body and squeezes and clamps the heat exchanger as it is folded, and at least one flange which is formed by cutting the said sheet material along certain cutting lines and folding it along certain folding lines, such that it extends at a certain angle with respect to the body and thus squeezes and clamps the sensor as it is folded; characterized in that the sensor holder is manufactured from a plate that is cut along a cutting line which is in shape of an open curve two ends of which do not conjoin, wherein the cutting line is positioned completely inside the plate. at least one heat exchanger whereby heat is transferred from the environment to the refrigerant fluid and; at least one sensor which is used to measure the surface temperature of the mentioned heat exchanger; a sensor holder which is manufactured from a sheet material with a proper contour, which is ductile enough to be cut and folded and which is so rigid to squeeze and clamp the sensor or the heat exchanger and comprising: a body whereby heat transfer is achieved as it touches the heat exchanger; at least one flap which is formed by cutting the said sheet material along certain cutting lines and folding it along certain folding lines, such that it extends at a certain angle with respect to the body and squeezes and clamps the heat exchanger as it is folded, and at least one flange which is formed by cutting the said sheet material along certain cutting lines and folding it along certain folding lines, such that it extends at a certain angle with respect to the body and thus squeezes and clamps the sensor as it is folded; characterized in that the sensor holder is manufactured from a plate that is cut along a cutting line which is in shape of an open curve two ends of which do not conjoin, wherein the cutting line is positioned completely inside the plate. a body whereby heat transfer is achieved as it touches the heat exchanger; at least one flap which is formed by cutting the said sheet material along certain cutting lines and folding it along certain folding lines, such that it extends at a certain angle with respect to the body and squeezes and clamps the heat exchanger as it is folded, and at least one flange which is formed by cutting the said sheet material along certain cutting lines and folding it along certain folding lines, such that it extends at a certain angle with respect to the body and thus squeezes and clamps the sensor as it is folded; characterized in that the sensor holder is manufactured from a plate that is cut along a cutting line which is in shape of an open curve two ends of which do not conjoin, wherein the cutting line is positioned completely inside the plate.