While looking for information on voice activated light switches I came across 
this information. I did notice that the dimmer switch does not mention that it 
will not work with fluorescent lights. 
Source: http://www.doityourself.com/stry/typesoflightswitches
 

Single-Pole Switch 

 ·  Controls power to lights and devices by turning off the hot side of the 
circuit. 

·  Mounted in an electrical box. 

·  Has two brass terminal screws. 

·  Controls current from one circuit from one point. 

Double-Pole Switch

·  Controls power to lights and devices by turning off the hot side of the 
circuit. 

·  Mounted in an electrical box. 

·  Has four brass terminal screws 

Three-Way Switch

·  Controls power to lights and devices by turning off the hot side of the 
circuit. 

·  Mounted in an electrical box. 

·  Has three brass terminal screws. 

·  Controls one circuit from two separate points. For example, a light that can 
be turned on in either the house or garage. It may also include a green 
grounding screw. 

Four-Way Switch

·  Controls power to lights and devices by turning off the hot side of the 
circuit. 

·  Mounted in an electrical box. 

·  Has four brass terminal screws. 

·  It may also include a green grounding screw. 

·  Used in connection with three-way switches to control one circuit from three 
or more points. 

Specialty Switches

·  A Rocker Switch operates the same as a standard switch, but instead of a 
toggle, it operates with a rocker action. 

·  A Delayed Action Switch keeps the circuit open for a few minutesafter the 
switch is turned off. A good use is in a garage where, after the user turns off 
the switch, it allows the light to remain on in time exit. 

·  A Photoelectric Switch operates with a photoelectric cell. It turns off 
during the day and turns on during the night. 

·  A Motion Switch turns on the light as you enter the room. Good for both 
convenience and security. 

·  An Illuminated Switch has a small light that is on when the switch is off so 
it can be easily found; these are usually used at entrances to rooms and in 
hallways. Another version is the Pilot Light Switch. 

·  An Outdoor Switch features a turning lever inside a weatherproof box cover 
with a toggle switch. 

·  A Voice-Activated Switch operates with a voice command 

Dimmer Switch

·  Controls the amount of current in a light circuit and allows for varying 
levels of light. 

·  Usually may be installed in place of standard switches. 

·  They are available in a variety of types, including rotary, toggle and 
slide. 

·  Dimmers may also interfere with radios and TVs and cause the light bulb to 
hum. Some dimmers are manufactured with a filter that eases this problem. 

Line Switch

 

·  Used to interrupt the flow of electricity on cords, most often for lamps and 
appliances. 

·  A variety of styles are available, and they can operate with a toggle, 
rotary or push-button action. 

Timers

·  Turn on lights and appliances at specified intervals and times. 

·  Available for indoor and outdoor applications. 

·  Spring-wound timers for bath fans and spas have a manual on-off switch. 

courtisy of NRHA.org 


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