… today, WERMA signals secure all processes! WERMA signal technology is one of the worldwide leading companies producing visual and acoustic signalling devices. Our solutions make working environments safe and processes more efficient – whether used on machines or manual workstations, in factory halls or entire buildings. From signal towers and signal lamps to horns and sirens - our signalling devices warn, guide and protect people around the globe. Our unique signal towers can be easily turned into machine data acquisition systems. This is what we call intelligent signal technology.