Optogates were developed in 1999 by Ohrwurm Showtechnik. We work in the rental business since 22 years and we served about 1800 concerts and other events in this time. We originally developed the Optogates for our own projects but quickly recognized the wider market potential. The circuitry was refined and the PB-05 was developed for local and export sale. The PB-06 followed shortly after following useful suggestions from clients. The company is small and prides itself on attentiveness to customer's needs. This is one reason that Optogate sales grow steadily at 30% per year. Another is the product itself, made to German levels of quality and performance.