This module generates a slow, random undulating brightness output for either a single LED, or 2 series-wired LEDs. The effect  replicates the glow seen in furnaces, forges and wigwam (sawdust) burners. Ideal for these applications and other factory or shop buildings where these type of heat sources are present. The use of 2 LEDs give double the light output and when strategically placed, can create a excellent "shine" effect off other nearby surfaces.