The Delta 1600T9001TR-BB Chrome E-Concealed UR Valve is part of Delta's Commercial Collection and comes in a Chrome finish. This Electronic Flush Valve is battery powered, and equipped with a self-diagnostic electronic and a manual override button. The Delta 1600T9001TR-BB Chrome E-Concealed UR Valve has an operating pressure of 10 to 125 psi, with 24 hour sentinel flush and uses 1.0 Gpf (gallons per flush) up to 60 seconds/1.6 Gpf after 60 seconds. The Delta 1600T9001TR-BB Chrome E-Concealed UR Valve has a convenient low battery indicator light, and requires 4 AA batteries. This Flush Valve is durable and designed to last up to 10 years in commercial applications, and a lifetime in residential applications. This Flush Valve is tested for strength, safety, and durability to ensure design integrity and is vandal resistant. Backed by a limited 5-Year commercial warranty.