... UV/IR protection: DIN 16 . Solar mask Of Auto-darkening EH-401/EF90401. Model of Solar mask :EH-401/EF9040, Configuration ADF ... cells, two lithium batteries be changed.10. Switching time of Solar mask:a) Light to dark: 1/25,000s. ... Adapt to ADF: EF9040J, EF9040,EF9242,EF9848.14. Colour of Solar mask: blue,green,silver,black,yellow,red, And ... customer’s choices. EH-401/EF9040 Solar Mask Of Auto-darkening