Testo 0554 7806 Super Resolution Upgrade for Testo Thermal Imagers increases pixel resolution by a factor of 4x and improves the geometric resolution of a thermal image by 1.6x. This can now be done because images are created by combining two technologies; super-sampling and deconvolution. .When you purchase SuperResolution, we will send you an alpha-numerical code that enables this feature on you camera. The upgrade code available for all Testo thermal imagers (except the Testo 880),