A system incorporating a fluid dispenser for dispensing chemicals includes at least one sensor for sensing fluid flow and a dispenser management unit. The dispenser management unit includes a processor and corresponding storage memory for storing firmware, at least one input for receiving sensor data from the or each sensor, a data transfer device comprising storage memory for storing the received sensor data, and a power source for powering at least the processor. The system further incorporates a portable terminal configured to receive data from the dispenser, and a remote server configured to receive the data from the portable terminal.