In fact, the toilet is the device that uses the most water in our daily life, even more than other living devices. Therefore, if we want to save water, we should start with the toilet. This water-saving detector can detect leaks and waste, which will make people worry less. The detector is installed between the water supply pipe and the drain pipe, with a toilet sensor and a tank sensor unit. The system can detect water pressure and check for leaks or excessive water flow. If there is a leak, the system will turn off the water supply and alert users of the problem. Currently, this product is priced at 127 US dollars abroad.