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 SO2 replacement sensor (0-5000 ppm)0 out of 5 $986.00 Add to cart CO replacement sensor (0-10000 ppm H2 compensated)0 out of 5 $1,122.00 Add to cart CO2 replacement sensor kit with board0 out of 5 Read more