Can I adjust the darkening feature on Auto Darkening Welding Helmets

Is there a way to force auto darkening welding helmets to darken with light other than the flash of an arc welder? For example, could I use an LED light or flashlight up close to make the lens darken? Or is there a test button that will darken the lens?

You will need an auto darkening welding helmet with a variable sensitivity option. This will allow the user to adjust the sensitivity on the lens for different light conditions. For example, if you turn the sensitivity all the way up, ambient light can cause the lens to darken. Remember a fixed shade auto darkening welding helmet will not have this feature, so be sure to look carefully at the options on the welding helmet you are considering purchasing. Jackson Safety produces an auto darkening welding helmet that comes with variable sensitivity option.