Battery Selector SwitchPart No. 2111AFeatures New ergonomically styled turn knob provides easy On/Off switching Updated color scheme and graphics make it easier to determine switch status Longer stud lengths for improved assembly and easier cable routing Built with heavy-duty copper sweep contacts to ensure positive circuit control Rugged internal components protected by a tough, impact resistant polycarbonate housing that is impervious to the elements One year warranty WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.