... -optical technology of Germany. Intelligent automatic welding helmet (EH-2 Series Helmet)1. Model :EH-221/EF9040, Configuration ADF Model: EF90402 ... high .12. Power on/off : Automatic.13. EH-2 Helmets Series Adapt to ADF: EF9040J, EF9040,EF9242,EF9848.14. Application:Mig ... /Tig/argon arc/arc welding/Gas welding.15.Colour: blue,green,silver,black,yellow,red, And ...