When interconnection is involved, more options are available in terms of connections, data flow, accessibility, and cost.

Several recorders with internal or external sensors are placed on site and are interconnected with one cable while galvanically isolated from each other. For convenient cabling external junction boxes are used. The interconnection between the stations can be carried out in ring, star, or net topology. Distances between the stations can be as much as 1 km. This is a favourable and cost effective solution for many applications.

Manual