Sdc Security Door Controls Lr100Fak Security System Accessory

The SDC LR100FAK is an electric latch-retraction kit for access-control installations using compatible mechanical exit devices, enabling electrically controlled latch retraction and pushpad dogging.

Recommended For

• Commercial access-control installers adding remote or automated release to an existing 36-inch Dor-O-Matic 1790 rim exit device or 1690 concealed-vertical-rod exit device; the LR100FAK is the model-specific retrofit kit for those devices.
• Facility teams upgrading an existing commercial exit door for staff entry after hours, using an access-control system to trigger latch retraction rather than replacing the entire exit device.
• Building operators who want remote or scheduled latch retraction and pushpad dogging on compatible mechanical exit hardware, with activation from access control, a remote control, or building automation.
• Teams retaining a compatible panic or fire-rated exit device while adding controlled entry; SDC describes the LR100 series as a retrofit for mechanical exit devices that preserves uninhibited egress.

Real-World Use Scenarios

• At a badge-controlled entrance with a compatible Dor-O-Matic 1690 or 1790 exit device, an access-control system can trigger latch retraction so authorized users can enter without the door being manually unlocked.
• When a building automation system or remote control is set to release the door, the kit retracts the latch and depresses the pushpad, allowing momentary or sustained push-and-pull operation.
• For a busy entrance or scheduled delivery period, sustained latch retraction can keep the exit device in its dogged position so people can pass without the latch engaging on every trip; the door can return to secure operation when the release ends.
• When upgrading an existing compatible exit device, a door technician can retrofit the latch-retraction mechanism rather than replace the entire exit device, adding electric access control while retaining the existing hardware.
• During an emergency or power-control event, occupants can still push the mechanical exit device to leave; electronic access control does not remove the device’s stated uninhibited-egress function.

Spec Summary