Cluster consists of 8 strings, the control centre, and the optical cable connecting the cluster to the shore station.

The control centre includes data module, trigger module, power module, and the optical thimble. The strings are connected to the control centre through the cables of length about 1 km, which transfer the data, trigger signals, and power. The data from the strings go into the data module which contains 8 DSL-modems (with the speed about 10 Mb/sec). Trigger request signals from the strings go into the trigger module which has a FADC unit similar to those contained in the section master modules. In responce the FADC unit forms the common acknowledgement signal for all the strings.