ASD8638 Features: * Repair Parts Faucets Amstd * Repair Parts * Selectronic bowls with 1.5" exposed back spud electronic flush valve with selectronic proximity system for hygienic "Hands Free" operation * Self-Cleaning Piston helps prevent clogging and reduces maintenance * Positive seal ensures leak-free performance without the chance of warping or cracking fully * State-of-the Art electronics eliminates false flushes sensor and electronic controls are hermetically sealed to ensure reliable operation * Automatic flushes after 24 hours of non-use to maintain trap seal and clean fixture * Fail safe - valve automatically closes on loss of power remains closed during start-up 3 second flush delay * Low Battery indicator * All exposed parts are chrome plated * Mechanical manual override button can flush toilet during a power outage range can be adjusted manually or by remote control Options: * Available in rough brass finish