Brown, lamp cord feed through on/off switch, turns a lamp on & off at the cord, for use with keyless sockets, use with #18 spt-1 lamp cord.
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 and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.