To minimize system downtime, replacement devices must be available as soon as possible. Exchange units, available on short notice, provide an alternative to repairs and replacement equipment stored on site. SICK quickly provides these devices as required without red tape, even before the components to be replaced arrive at the repair center. The exchange units are not only new, but also feature the latest technology. It is also possible to provide the components with pre-set, application-specific device parameters. With original replacement devices from SICK, these devices can be easily and flexibly adjusted to meet customer requirements.