Eti superfast thermapen 4 probe thermometers eti 234 437 the superfast thermapen 4 from eti is the uks number one selling food thermometer measuring temperature over the range of 499 to 2999 degc and used by thousands of discerning cooks worldwide it offers a combination of speed accuracy and convenience of usethe thermapen 4 uses advanced technology and includes a number of innovative features the patented 360deg self rotating display can be used in any position in either hand