TC adapter to connect NiCr-Ni thermocouples and probes with open wire ends.$115.00 For Testo 445, 645. Call us for a quote Product Model: 0600 1693 TC adapter to connect NiCr-Ni thermocouples and probes with open wire ends. quantity Add to cart SKU: 0600 1693 Category: Testo Sensors Parts & Accessories Tag: Testo Sensors Parts & Accessories Description Description For Testo 445, 645. Related products RS 232 data transfer cable 5.9 ft / 1.8 m0 out of 5 $104.00 Add to cart Testo 350XL/335 CO replacement sensor (0-10000 ppm H2 compensated)0 out of 5 $1,264.00 Add to cart SO2 replacement sensor (0-5000 ppm 1 ppm resolution)0 out of 5 $525.00 Add to cart