This flickering log 'n flame comes as a completely enclosed unit with two wires that connect to your dollhouse wiring system. It can easily be placed inside most any fireplace to give that authentic real flickering fire look. Unit measures about 1-1/2" wide by 1" high by 3/4" deep. Because it uses LED's it will last virtually forever and all you need to do is connect it to your 12 volt electrical system. It does not get out and will not interfere with the rest of your lights in the dollhouse or roombox. It also uses about the same current as that of one "grain of wheat" bulb.