The VSC100 is included with the PVS5120-series water samplers, and it can be ordered as a replacement part. The VSC100 allows a sampler to be controlled by an external data logger or PLC device without the need to independently program the sampler. The VSC100 is used instead of a controller with a keyboard display. For most deployments, pushing a button after the sampler is in place is all that needs to be done to set all of the time settings (purge time, etc.).