Insight technology features an adaptive infrared sensor that gathers and analyzes the surrounding area upon installation. After recording these details, Insight calibrates the sensor to filter false triggers and optimize the faucet's operation. 0.5 gal/min (1.9 l/min) flow rate. This is trim set only. It requires valve kit to complete the faucet. Vandal-resistant aerator. 8-1/4" (210 mm) spout reach. Less drain. Safe Drinking Water Act (SDWA- Low Lead) compliant. Single-hole spout mounting. Please consider appropriate distance between spout and sensor. On demand on and off. Valve kit is factory set to 30 second max. continual run cycle if it turned on continuously.