This hand-held digital thermometer includes a stainless cable with a stainless probe, so it doesn’t melt inside the oven. You can insert into your sample, running the cable through the air vents or the door and read the sample temperature without even opening the door. This hand-held thermometer can also be used in a multitude of other applications, the mat, concrete, frost etc. NIST Certified option is available. Allow 2 weeks for certification.