The attached thermocouple is equipped with a temperature controller, which can accurately measure the temperature of the hot wire. The circuit of the control unit is fully protected by fuses and miniature circuit breakers. QINSUN Glow Wire Test Equipment is a fully automatic instrument, which is contained in its own cabinet, to maximize the safety of operators, and the large observation window and black wall ensure convenient observation. https://www.qinsun-lab.com/News-and-events/2015.html