Swarm A10, A20 and A30 helmets make it easier for welders to use the correct eye protection. The A10 has an auto-darkening filter fixed to shade 11. The A20 and A30, featuring a shade range from nine to 13, have an external shade selector knob and full internal dial controls, respectively. Workers also can change the shade for grinding work. The A10 and A20 helmets have two arc sensors, while the A30 has four.
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