Digi-Sense Type-K, Comp 90 Angle Surf Probe, 8.5" L, Mini-Connector, Exposed, 5ft CoilDigi Sense Type K, Comp 90 Angle Surf Probe, 8. 5" L, Mini Connector, Exposed, 5ft Coil Designed to measure surface temperature without penetrating the surface These probes are designed to measure surface temperature without penetrating the surface Ideal for monitoring flat surfaces such as hot plates, furnaces, or molds Each probe comes with a lower profile tip than other surface probes for hard to reach areas Response Time: 1. 25 seconds or greater