Traditional waffle irons are attached to tongs with wooden handles and are held over an open flame, or set on a stove. Most modern waffle irons are self-contained tabletop electrical appliances, heated by an electric heating element controlled by an internal thermostat. There are also two variants of the electric iron: one with removable plates and ones with non-removable plates. Professional waffle makers are usually made of cast iron whereas domestic models are often teflon coated. Many have a light that goes off when the iron is at the set temperature. Most modern waffle irons - particularly cast aluminum ones - are coated with a non-stick coating (e.g. teflon) to prevent the waffles from sticking to them. Cast-iron waffle makers are usually not coated and require seasoning like a cast-iron frying pan.
Like most electric waffle irons, the Cuisinart WMR-CA waffle maker isn't meant to be submerged, and the waffle plates are built right into the machine, so you can't remove them for a good scrubbing. Surprisingly, removable plates are relatively rare, especially in the American/traditional waffle maker category. But the Black and Decker G48TD (Est. $40) has them, which makes it very convenient to use. Not only do the non-stick waffle plates pop out for easy cleaning, they also have a completely flat reverse side (also non-stick). Flip the plates to their flat side and open the G48TD's lid all the way, and you have yourself a mini griddle for cooking things like pancakes and bacon; or close the "floating" hinged lid and use it to toast sandwiches.