It is an infrared thermometer that allows to measure the temperature at a certain distance from the body and surfaces. This gray Spengler device works based on the premise that heat is radiation. That is, it quantifies the amount of radiation emitted by a body and then converts it into electricity and finally into the number displayed on the screen. It is ultra-precise in all conditions and ideal for taking the temperature instantly a few centimeters away from the patient (3 to 5cm). The device is designed for qualified healthcare personnel or for home use. As it is non-contact, it avoids the possibility of cross-contamination and can measure environmental, surface and body temperature reliably. It has 32 memories and an audible alarm when the reading is ready.