1.Belarus Welding helmets. 2.CE,ANSI Z87.1 certifications. 3. ... Products meet the indicatorsBelarus Welding helmets1. Model of Belarus Welding helmets:EH-407, Configuration ADF Model: EF9040.2. Fire ... batteries be changed.10.Switching time of Belarus Welding helmets:a) Light to dark: 1/25,000s.b) ... .12. Power on/off : Automatic.13. EH-4 Helmets Series Adapt to ADF: EF9040J, EF9040,EF9242,EF9848.14. ...