FOR LIGHTING & SIGNAL SYSTEMS LABEL WHISTLE BUILDER ZÖLLNER GMBH TYPE ZET-HORN 131 AC BUILDING YEAR 2009 SERIAL NO. BSH/4615/60128 SIGNAL SAMPLING PCB 10061012 / BZ5-HOH-64ZK / 2K1001 Z?LLNER GMBH .ZET-HORN131AC .JH7. 623. 414