This combination lock is a high-end solution for the decontamination of persons in protective clothing. Ortners Wet Shower Lock is a product which offers high security, user friendliness and easy maintenance at the same time. Each process is monitored independently by a flow rate gauge. Safety was a priority when the device was developed. Special situations like panic and/or evacuation situations were considered during the designing phase. In addition, we have created the new Bag-Out-Port solution, so the disposal of contaminated materials can be done from inside the lock. The result is efficient but also cost-effective.