A data collection and monitoring system for a defined space within a public or commercial facility, comprising: a plurality of sensors (5a, 7a, 9a, 10a, 11) of which at least one sensor (5a, 7a, 9a) is arranged for detecting the remaining amount of, and delivering data indicating the level of, a consumable in a dispenser (5, 7, 9) associated with said sensor (5a, 7a, 9a) and being positioned in said space; a data collecting unit arranged for wirelessly communicating with said sensors (5a, 7a, 9a, 10a, 11), and a central server associated with a storage medium, said storage medium being adapted for storing and monitoring data related to said space, wherein the data collecting unit furthermore is arranged for communicating with the central server, wherein the data collecting unit comprises: - at least one short range communication unit arranged to receive data from the sensors (5a, 7a, 9a, 10, 11), - at least one memory unit arranged to store said data, and - at least one long range communication unit arranged for relaying the data to the central server, wherein data from at least one of the sensors (5a, 7a, 9a, 10, 11) is transmitted to the data collection unit on a regular basis, wherein said data collecting unit is arranged for transferring data from said sensors (5a, 7a, 9a, 10a, 11) stored in the at least one memory unit to said central server upon a status change of at least one of said sensors (5a, 7a, 9a) arranged for detecting the remaining amount of a consumable in a dispenser (5, 7, 9), and wherein the system comprises a traffic sensor communicating with said data collecting unit and being adapted for detecting traffic data related to the number of visitors of said space, wherein said system is arranged for transmitting said traffic data from said traffic sensor to said central server upon a status change of the traffic sensor. a plurality of sensors (5a, 7a, 9a, 10a, 11) of which at least one sensor (5a, 7a, 9a) is arranged for detecting the remaining amount of, and delivering data indicating the level of, a consumable in a dispenser (5, 7, 9) associated with said sensor (5a, 7a, 9a) and being positioned in said space; a data collecting unit arranged for wirelessly communicating with said sensors (5a, 7a, 9a, 10a, 11), and a central server associated with a storage medium, said storage medium being adapted for storing and monitoring data related to said space, wherein the data collecting unit furthermore is arranged for communicating with the central server, wherein the data collecting unit comprises: - at least one short range communication unit arranged to receive data from the sensors (5a, 7a, 9a, 10, 11), - at least one memory unit arranged to store said data, and - at least one long range communication unit arranged for relaying the data to the central server, - at least one short range communication unit arranged to receive data from the sensors (5a, 7a, 9a, 10, 11), - at least one memory unit arranged to store said data, and - at least one long range communication unit arranged for relaying the data to the central server, wherein data from at least one of the sensors (5a, 7a, 9a, 10, 11) is transmitted to the data collection unit on a regular basis, wherein said data collecting unit is arranged for transferring data from said sensors (5a, 7a, 9a, 10a, 11) stored in the at least one memory unit to said central server upon a status change of at least one of said sensors (5a, 7a, 9a) arranged for detecting the remaining amount of a consumable in a dispenser (5, 7, 9), and wherein the system comprises a traffic sensor communicating with said data collecting unit and being adapted for detecting traffic data related to the number of visitors of said space, wherein said system is arranged for transmitting said traffic data from said traffic sensor to said central server upon a status change of the traffic sensor.