ZURN PEMS6000-HYMIS AquaSense 'AV' Exposed Hardwired Automatic Sensor for Flush Valves- The unit incorporates a motorized actuator, an integral infrared convergence-type proximity sensor and a manual push-button override into an all-metal, polished chrome plated housing. Sensor range automatically adjusts to its environment at power up and is powered by a 7.6 VDC power converter. Order power converter separate. Each power converter can accommodate up to eight flush valves.