The fire kit is a combination of 3 LEDs: a flashing red, a flashing yellow and a solid orange. The secret to the fire effect is the very different flash rates of the 3 LEDs, giving a realistically random effect.
To make a miniature flickering campfire, trash fire, small brush fire, or other small fire, we suggest the 3mm fire option, since the 3mm bulbs are easy to hide under scenery.
For dollhouse scale fireplace fires, we like to use the 5mm Fire Kit. The bulbs give a great warm glow to the whole fireplace!
For structure fires, where a whole floor or more of the building is engulfed in flames, we use 2 or even 3 packs of the 5mm Fires to get things really looking lively.
There is no circuit board needed for this kit. It is sold as a pack of 3 lights.
The kit also includes a handy on-off switch.
The kit is also available with a 9v battery adapter.