A system comprising: a sanitary ware product ; an outlet pipe of the sanitary ware product ; a processor; and a sensor operable to detect the presence of fluid in the outlet pipe ; wherein the sensor is configured to output to the processor at least one first signal containing first information relating to the presence of fluid in the outlet pipe ; wherein the processor is configured to process the first information from the at least one first signal to generate a second signal, and output this second signal to a device; wherein the sensor is attached to the outlet pipe; and wherein the outlet pipe comprises an end located upstream of the sensor, wherein said end of the outlet pipe located upstream of the sensor is connected to an outlet of the sanitary ware product , and wherein the sensor is positioned, in use of the system, directly underneath said end of the outlet pipe located upstream of the sensor and directly underneath the outlet of the sanitary ware product ; wherein the outlet pipe comprises an upstream pipe section extending in a first direction and a downstream pipe section extending in a second direction different from the first direction, and an interface pipe section located at the interface of the upstream and downstream pipe sections (14;16), wherein the sensor is in contact with the interface pipe section ; characterized in that interface pipe section comprises a flat surface , and wherein the sensor is in contact with said flat surface , wherein said flat surface is located underneath the outlet of the sanitary ware product such that fluid passing out from the outlet of the sanitary ware product into the outlet pipe falls onto the flat surface , and then runs off the flat surface down towards the downstream pipe section . a sanitary ware product ; an outlet pipe of the sanitary ware product ; a processor; and a sensor operable to detect the presence of fluid in the outlet pipe ; wherein the sensor is configured to output to the processor at least one first signal containing first information relating to the presence of fluid in the outlet pipe ; wherein the processor is configured to process the first information from the at least one first signal to generate a second signal, and output this second signal to a device; wherein the sensor is attached to the outlet pipe; and wherein the outlet pipe comprises an end located upstream of the sensor, wherein said end of the outlet pipe located upstream of the sensor is connected to an outlet of the sanitary ware product , and wherein the sensor is positioned, in use of the system, directly underneath said end of the outlet pipe located upstream of the sensor and directly underneath the outlet of the sanitary ware product ; wherein the outlet pipe comprises an upstream pipe section extending in a first direction and a downstream pipe section extending in a second direction different from the first direction, and an interface pipe section located at the interface of the upstream and downstream pipe sections (14;16), wherein the sensor is in contact with the interface pipe section ; characterized in that interface pipe section comprises a flat surface , and wherein the sensor is in contact with said flat surface , wherein said flat surface is located underneath the outlet of the sanitary ware product such that fluid passing out from the outlet of the sanitary ware product into the outlet pipe falls onto the flat surface , and then runs off the flat surface down towards the downstream pipe section . <EOS>