Type K temperature probes provide economical measurement from -20 degrees C to 550 degrees C with more corrosion resistance than J type probes. Type T probes are commonly used for temperature ranges from -200 degrees C to 200 degrees C. Probes available with an inconel sheath or insulated wire. Code -28 extension will allow the use of a controller up to 8 feet away. See code -30 for extra mini plugs.