Siemens OD-LP Outer Door Lens PlateThe Outer Door Lens Plate (Model OD LP) is a clear plastic lens plate mounted on the outer door of a Siemens Modular (or FireFinder) system cabinet. Model OD LP is used to allow operators to see the system interface and controls mounted on the inner door, but restricts access to unauthorized users. The plate covers an entire row on the outer door. A single lens plate is included with each order of Model OD LP.