Specifications:
1. Light states: DIN 4
2. Dark states: DIN 9~13, Variable shade
3. Cartridge Size: 110 x 90mm
4. Segmented shade adjustment switch: DIN5~9, DIN 9~13 (Internal, Variable)
5. View Area:
AST01: 93 x 43mm
AST02: 98 x 53mm

6. Sensors:
AST01: 2 pieces
AST02: 4 pieces
7. Low Battery Alarm: YES
8. ADF Self-check: YES
9. Response time (bright to dark):
10.The return time (dark to bright):adjustable 0.15s ~ 0.8s

11. Sensitivity (welding based on current size): adjustable low/high
12. Ultraviolet transmittance:313nm≤0.00006%, 365nm≤0.00006%
13. UV protection: 16 levels
14. Infrared ray through rate: 780~1300nm:≤0.003%; 1,300~ 2,000nm: ≤0.009%

16. Working temperature: -10°C ~ +60°C(23°F ~ 131°F)
17. Storage temperature: -20°C ~ +70°C(-4°F ~ 158°F)
18. Masks materials: PP
19. Weight:
AST01: 430g
AST02: 450g
20. Suitable for ARC, TIG, MIG, Spot, Micro, Wire, AC, DC, and Plasma Welders and Plasma Cutters.