Product review (3 stars): Do not use for precise applications. For casual use, it's okay.
We have several of these instruments and upon comparing them side by side they vary within about 5 degrees and it brought up questions when we had an inspector visit and compared it to his own meter. Because it does not come with a traceable cert (i.e. NIST), I would suggest purchasing a meter with a traceable cert to compare your meters against. Would not buy again for applications where precise temperatures are necessary.