S240-12 - ArcOne Singles HD 2x4 Auto-Darkening Lens - Shade 12

Professional Retrofit ADF for 2x4 Helmets

The Walter Surface Technologies S240-12 is part of the renowned ArcOne Singles® HD line, offering a premium auto-darkening solution for welders who prefer the compact form factor of a 2" x 4-1/4" lens. This unit is engineered to retrofit into most standard welding helmets, including leather hoods and pipeline-style masks, providing an instant technology upgrade without the bulk of a full-shell digital helmet. The S240-12 provides a Fixed Shade 12, specifically calibrated for heavy-duty welding processes such as structural Stick welding and high-amperage MIG applications.

Superior Optics and Performance

At the core of the S240-12 is ArcOne's HD technology, which significantly improves color recognition and contrast. The viewing area covers 5.25 square inches, maximizing visibility within the compact frame. The lens operates with a resting Light State of 2.5, which is noticeably clearer than the standard shade 3 or 4 found in older ADFs. This clarity is crucial for pre-weld setup and post-weld inspection, reducing the need for repetitive helmet flipping which can lead to neck fatigue.

Reliability and Durability

Built for the industrial environment, this lens is water and dust resistant. It utilizes a solar-powered energy system that draws charge from the welding arc and ambient light, ensuring it is always ready to work when you are. The detection system employs two independent sensors to prevent flash-banging, even in obstructed views. Certified to ANSI Z87 and CSA Z94.3 standards, the S240-12 delivers professional-grade safety and performance. Whether you are in the field or the shop, this lens provides the consistent protection and high-definition view necessary for quality fabrication.