...4520/IRT 4020, type 6022/6023. Was purchased about 5 months ago. Went to use it, it turned on showed all the visual it can on screen then turned off and has not turned on again. Have since then, ...
...error. i know how to use it, so i'm putting it in ear right way, my temp deffinitelly is not 42.2degrees. tried to change batteries, no change, same story. any suggestions (other than im not ...
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