Check the listing for details. Spectsun 4 Packs Green Exit Sign with Battery Backup Combo Emergency Exit Light.. Condition: New. Listed at 179.99 USD. Spectsun 4 Packs Green Exit Sign with Battery Backup Combo Emergency Exit Light. SPECTSUN Brand StorySPECTSUN was founded in 1990 as an all-around enterprise engaged in the development, production, sale and service of lighting and electrical products for markets worldwide. We incorporate state of the art technologies in product design and manufacturing processes. The combined technologies of LED light sources, rechargeable battery expertise and compre-hensive plastics molding capabilities makes us the premier supplier to a number of international companies.With a quality tradition that dates back to 1997, SPECTSUN passed ISO9001 certification in 1998 and has maintained its ISO Certification as a commitment to international practice.