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.