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 degree F (104 degree C); PVC handles are rated to 200 degree F (93 degree C); stainless steel handles are rated at 450 degree F (232 degree C); mini connectors are rated to 392 degree F (200 degree C). thermistor probes offer excellent accuracy over the biological temperature range probes are electronically isolated and with a ¼” Mono 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.