Note: time constant is the time required to REACH 63.2 percent of the new reading. To determine how long it will take to REACH 99 percent of the new reading multiply the time constant by five. Note: the temperature range is for the probe tip only. The handle material may be affected If the probe is rated higher than the handle depending on exposure time, application, and handle material. ABS handles are rated to 220°f (104°c); PVC handles are rated to 200°f (93°c); stainless steel handles are rated at 450°f (232°c); mini connectors are rated to 392°f (200°c). thermistor probes offer excellent accuracy over the biological temperature range probes are electronically isolated and come with a 10ft lead with a ¼" phono plug (unless otherwise specified). probes are designed for multiple applications. Epoxy coated probes can be used in liquid immersions. Time constant: 1-4 seconds or greater custom designs or changes to this product are available upon request