This ETC Source Four Jr ellipsoidal light comes with an Edison plug. Note that it doesn't include a bulb or a C-Clamp.

Using this ETC Source Four Jr light is easy. First, find a suitable location to place the light. Since it has an Edison plug, you can directly plug it into a compatible socket. But remember, you'll need to buy a bulb separately and also get a C - Clamp if you need to mount it. When using, make sure the power supply matches the requirements of the light to avoid any damage. For maintenance, keep the light clean. You can use a soft, dry cloth to wipe the surface regularly. Don't use harsh chemicals as they might damage the light. If there are any problems, it's best to consult a professional.