The Helios EHR‑R 1,2÷160 is a closed tubular steel heating element designed for use in standard duct systems. Its tubular casing includes a plenum box made from aluzinc-coated steel, ensuring durability and resistance. This heater maintains a low surface temperature and is equipped with an automatically resetting temperature limiter that activates at 50 °C and a manually resettable limiter triggered at 100 °C, providing reliable overheating protection. Ideal for efficient heating within ventilation ductwork, this element offers safe and effective temperature control.