The Dormakaba DK-KES2200 is a high security electric strike, offering a single model which includes features such as switch monitoring of latch, keeper and solenoid, variable voltage from 12VDC/ AC to 28VDC/AC and a fast and convenient interchangeable fail safe/fail secure function (changeable on site). The construction of housing and keeper are of stainless steel and include pre-drilled holes for optional extension lips. Also included in package is an installation kit for metal frame installation.