HDCCTV HD SDI helps petrol stations finally get a CCTV system that really works 29/04/2013 by Paul | Leave a Comment ST1 are a Finnish group who own many service stations across the Finnish mainland. They needed a solution to replace their poorly performing analogue CCTV systems, below is detail of how they went about solving it. “Only a few people in the UK may have heard of the Finnish energy group St1. The company based […] Read more » HD SDI bullet camera