Resistance Thermometers (RTD's), can be wired using copper cable wire. These cables can be 2 conductor, 3 conductor , 4 conductor or 6 conductor with or without electrical shielding. Teflon FEP is the most common jacket, rated @ 400°F / 204°C. Other jacket styles are available upon request. To help you choose the right cable please call 1-800-847-8367 and discuss your application with a TIPTEMP Thermal Advisor.