Abstract: Set of devices adapted to form a local network (3), the set comprising at least one first communication device (1) and multiple second communication devices (2), wherein the first and the second communication devices comprise a short-range communication module (4) to communicate in the local network (3) via a hopping mechanism, and wherein the first communication device additionally comprises a long-distance communication module (5) to communicate with a remote server (6), wherein each one of the second communication devices (2) comprises a memory adapted to store a hopping distance to the first communication device wherein the second communication device is configured to execute actions based on said hopping distance in said power cutoff mode.