The CleanWave sensor activated toilet flush system is operated by waving a hand over the handle. This product is easy to install on existing front mount toilet tanks. It requires four AA batteries (not included), and can operates as a manual flush. The product was developed with light indicators — a blue flash every 10 seconds indicates operating normally; a red light indicates low battery. The flushing time is 45 seconds between flushes. The toilet is tested to 350,000 flushes for the life of the product and comes with a full one-year warranty. Jones Stephens.