- High-temperature protective cover, which will automatically exit the furnace when encountering gas or power outages and over-temperature conditions.

- Widely used in metallurgy, steel, electricity, glass, building materials, machinery, cement kilns, metallurgical heating furnaces, power plant boilers, waste incinerators, petrochemical plants, and steel heating furnaces.

- Oil, coal, and gas furnaces only require compressed air so the camera lens can be directly extended into stoves (> 2000°C)