Dimmer switch: A device to decrease or increase the brightness of the headlights by switching from high beam to low beam and vice versa. Related posts: Personnel Management Operative Functions Administrative Role of PM Competency HR Management Role Change Personnel Policies Personnel Procedures Appealed Policies Implied Policies Specific Policies Personnel records Research Pure research Personnel research Attitude or Opinion Survey Turnover Secondary research Applied research Personnel audit Read more articles Previous PostDimming mirror Next PostDirectional stability