Brand New SDC 492 490 Series Emergency Door Release Pull Station, Blue Product Overview DC?s 490 series emergency release stations provide immediate unlocking of perimeter doors or interior doors that are equipped with fail-safe electric locks. The 490?s built in alarm may be used as a local door annunciator. Specifically designed for emergency door release, 490 series emergency release stations may influence the approval of an electric locking system. The 491 model may be preferred over a pull station since greater commitment is required to break the glass. Main Features Blue housing eliminates confusion with red fire alarm stations Easy to read activation instruction Integrated siren sounds upon activation Initiates release of individual door or all doors on same circuit Main contact for lock release Auxiliary contact for remote monitoring, CCTV or alarm activation Surface mount, single gang or double gang back box mount with plaster ring cover Two replacement glass pieces included General Information Name: SDC 492 490 Series Emergency Door Release Pull Station, Blue Category: Security Door Controls, Access Control, Egress Devices, Emergency Pull Stations UPC Code: 712905260457 Country of Origin: United States. Country of origin is subject to change. Inventory 20 Rh-In 3