Testo 0602 1293 penetration probe k temperature sensor testo 0602 1293 p this type k immersion penetration probe is designed for use with testo products which require a k type sensor the probe is designed as a general purpose probe for measurement of temperature in liquids and gels and has a measuring range of 60 to 400 deg c at probe tip and a fixed cable of 1 2m length terminating in a standard type k plug testo 0602 1293 penetration probe k temperature sensor 60 to 400 deg c