ALL STANDARD WE COULD PROVIDE,SUCH AS :UL,CE,GS,BS,SAA...ETC. & ROHS CERTIFICATE. USE INSTRUCTIONS: Unpack the product and take out: a) house model; b) light holder with cord; c) C7 light bulb.Place the house model on a solid flat surface.Put on a glove, and clip two metal ends of light holder to place it into the hole located at the bottom of the house model, then loose your hand to fix on the light holder by that two metal ends.Place the product in a place where it can be connected to a proper power source without the cord being tight.Insert the pin of the cord into the socket of the transformer. Connect the product to a proper power source.Make the switch to “on”, then light will be on; make the switch to “off”, then light will be off.REPLACING THE LIGHT BULB: 1. Prepare a 24V 5W, C7 light bulb. 2. Make the switch to “off ” state, then unplug the product. 3. Put on a glove, and clip two metal ends of light holder to take out the light holder. 4. Unscrew the used light bulb counter-clockwise; and then screw in a new light bulb clockwise. 5. Put on a glove, and clip two metal ends of light holder to place it into the hole of the house model, then loose your hand to fix on the light holder by that two metal ends. WARNING: Use a 5W or smaller light bulb only.Use the product in a dry area indoors to avoid from being electric shock.Do not use it in a closed box.Place the product in a place where child can not touch it.Do not let the product work when it is being unattended.When changing the light bulb, should clip it properly to make it being connected well and will not damage the bulb.Because the product can produce heat, avoid any cord from touching the product’s surface directly.Anytime, do not touch the light bulb when it is illuminated. When the cord is damaged, do not try to connect it to any power source; it can only be used as a common decoration without any function or it just be looked as a waste.