Automatic Lighting Controllers that Turn Lights On and Off

Security, safety, and convenience are all reasons for having lights turn on and off automatically.  Here are several very simple screw-in devices that can convert almost any lamp or light fixture into one that operates without the need for manual control.  Some operate at dusk or dawn; some have built-in timers that can be pre-set, and others allow a lamp to be switched on or off simply by touching it.