Method for detecting earthquakes including the steps of: • providing a network of lights comprising a plurality of lights, each light having a control module (1, 2) associated therewith, each control module comprising: - a long-distance communication module, - a short-distance communication module, - a geocoordinates module, - a controller, and - a control output for controlling a driver of the light, wherein at least some of the control modules comprise at least one sensor for detecting at least one of acceleration and seismic waves, • providing at least one server reachable via the long-distance communication module, • dividing the control modules into one or multiple control module groups based on at least one of: environmental, light and control module information provided by the control modules (1,2), • selecting one of the control modules (1,2) of each group as a group controller with which all other control modules of the group can communicate via their short-distance communication modules, • forming a short-distance network with the group controller and the other control modules within the group, via respective short-distance communication modules, • during normal network operation, only the group controllers transmitting to the at least one server sensor information of the control modules (1, 2) comprising sensors, and information of the respective geocoordinates module, received from the other control modules via the short-distance communication module, the normal network operation being a situation in which each control module (1, 2) of the network is allocated to a group and in which all control modules (1, 2) control the light, and • analysing, on the at least one server, the sensor information provided by the control module sensors to identify seismic waves. • providing a network of lights comprising a plurality of lights, each light having a control module (1, 2) associated therewith, each control module comprising: - a long-distance communication module, - a short-distance communication module, - a geocoordinates module, - a controller, and - a control output for controlling a driver of the light, wherein at least some of the control modules comprise at least one sensor for detecting at least one of acceleration and seismic waves, - a long-distance communication module, - a short-distance communication module, - a geocoordinates module, - a controller, and - a control output for controlling a driver of the light, wherein at least some of the control modules comprise at least one sensor for detecting at least one of acceleration and seismic waves, • providing at least one server reachable via the long-distance communication module, • dividing the control modules into one or multiple control module groups based on at least one of: environmental, light and control module information provided by the control modules (1,2), • selecting one of the control modules (1,2) of each group as a group controller with which all other control modules of the group can communicate via their short-distance communication modules, • forming a short-distance network with the group controller and the other control modules within the group, via respective short-distance communication modules, • during normal network operation, only the group controllers transmitting to the at least one server sensor information of the control modules (1, 2) comprising sensors, and information of the respective geocoordinates module, received from the other control modules via the short-distance communication module, the normal network operation being a situation in which each control module (1, 2) of the network is allocated to a group and in which all control modules (1, 2) control the light, and • analysing, on the at least one server, the sensor information provided by the control module sensors to identify seismic waves.