... clear)3)the number of thread:20 pcs 4)Harmonious light with 120 degree wide viewing angle5)working temperature:-20-50 ... degree 1) Pure color, available in full range of single-color, red, yellow,blue,green,white etc.2) Low power ... used in the illumination of emporiums,meeting room,factory and light box. 8)Channel letters, symbols, signage backlighting, advertising signs backlighting ...