Buy Thermal Infrared IR Cameras: Infrared radiation IR cannot be perceived by the human eye. However, all objects whose temperature is above the absolute zero point of approximately -273 degrees centigrade, emit infrared radiation. Thermal imagers can convert infrared radiation into electric signals, and thus present them visually. With the excellent image quality of the testo 880, even the smallest temperature differences can be seen. With it, Testo is committing to the future. Exchangeable lenses ensure that the correct image section is always visible, highly flexibly and depending on the requirements. The additionally integrated digital camera considerably facilitates documentation. The presentation of surface humidity, using dynamic humidity measurement and calculation of the parameters, for fast localization of mould risk spots, is unique in building thermogaphy.