Ensures toilets are always flushed and presentable.Wireless sensor located directly in front of the user guarantees activation reduces cross-contamination potential.Easy to install for less labor and maintenance costs no water shutoff required.Includes smart object infrared technology to manage flushing plus a courtesy flush button for world-class reliability.Efficient battery lasts for 3+ years or up to 100,000 flushes.Operates on four C batteries (included).Low battery warning indicator.