A data collection and monitoring system for a defined space within a public or commercial facility, comprising: a plurality of sensors of which at least one sensor is arranged for detecting the remaining amount of, and delivering data indicating the level of, a consumable in a dispenser associated with said sensor and being positioned in said space ; a data collecting unit arranged for wirelessly communicating with said sensors , 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 , - 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 is transmitted to the data collection unit on a regular basis, wherein said data collecting unit is arranged for transferring data from said sensors stored in the at least one memory unit to said central server upon a status change of at least one of said sensors arranged for detecting the remaining amount of a consumable in a dispenser , 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 of which at least one sensor is arranged for detecting the remaining amount of, and delivering data indicating the level of, a consumable in a dispenser associated with said sensor and being positioned in said space ; a data collecting unit arranged for wirelessly communicating with said sensors , 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 , - 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 , - 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 is transmitted to the data collection unit on a regular basis, wherein said data collecting unit is arranged for transferring data from said sensors stored in the at least one memory unit to said central server upon a status change of at least one of said sensors arranged for detecting the remaining amount of a consumable in a dispenser , 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. <EOS>