CrossingGard with ThreatProtect creates lock down zones within a building when a hostile event alarm is triggered or opens to allow freedom of movement in the event of fire alarm. ThreatProtect controls are determined by end user protocol based on the building design & emergency management plans. The operating system uses two alarm inputs and a self-contained back-up power supply to provide flexibility to assist in managing threatening situations. Ideal for educational facilities, medical complexes and large venues.