The DRK Air Electric Heater is a complete set of equipment that converts electrical energy into heat energy. It has the advantages of convenient energy supply, compact structure, automatic temperature control, easy installation and maintenance, and no pollution. This heater consists of a tubular container and electric heating elements, equipped with a temperature control cabinet (panel). The heating element uses Cr18Ni19Ti stainless steel seamless tube as the protective sleeve, and the internal heating element is composed of OCr27Al17M02 high-temperature resistance wire and crystalline magnesium oxide. Temperature control adopts thyristor regulation, PID digital display. Within the temperature control range, the desired temperature can be arbitrarily set, and constant temperature is automatically maintained. The control temperature is ±5℃, with over-limit audible and visual alarm and multiple protection functions. It can be controlled locally or remotely.