Pulsar V2.0 with SmartChoice Technology makes saving water seamless. The V2.0 is a sensor-activated dual flush valve that, based upon how long the user remains within the range, will determine the flush volume needed. Pulsar V2.0 and Pulsar share the same simple, self-contained electronics, the longest lasting lithium battery and a US-manufactured solenoid. Together, 375,000 continuous flushes have been achieved on a single battery.