50 to 660 degrees Celsius (122 to 1220degrees Fahrenheit). Cool to –25 degrees Celsius in 15 minutes and heat to 660degrees Celsius in 15 minutes. Built-in two-channel readout for PRT, RTD, thermocouple, 4-20 mA current. True reference thermometry with accuracy to plus or minus0.01 degrees Celsius. Lightweight, portable, and fast. On-board automation and documentation. Metrology performance in accuracy, stability, uniformity, and loading. Insert C: Four ¼” . 6-pin DIN connector, Test Lead Kit, Clamp-on ferrites (3) in –P model only.