Applications 
                        应用
                        
All applications where an over or under temperature fault condition could present fire hazard or other hazard
Heat generating plants with outflow temperatures up to 120℃
                        
                         (DIN 4751)
Hot-water plants with outflow temperatures above 110℃
                        
                         (DIN 4752)
Thermal transfer plants with organic transfer media (DIN 4754)
Oil-heated plants (DIN 4755)