Master Reset For the Ti40, Ti45, Ti50, Ti55 Thermal Imagers

On the bottom left of the unit, there is a rubber flap that covers the power input and USB calibration ports. At the top of the plastic there is a small pin hole (item 9). While the unit is on take a paper clip, insert into the hole. The unit will turn off. Power on the unit. Press no button or switch till the unit does one complete calibration cycle.