The STK1 is a general purpose temperature probe based on a nickel-chromium (Chromal)/nickel-aluminium (Alumel), K type, thermocouple sensor (see specification for details).
The thermocouple is housed in a stainless steel sheath of 4.8 mm nominal outside diameter, 125 mm long, connected to a 5 m cable.
Thermocouple type – K