The DOMINO 87-203 Emergency Lighting Beacon is a compact, Bluetooth-enabled module designed to manage emergency lighting loads within the Domino networked lighting control system. Rated for 120–277V operation, it complies with UL 924 to automatically transfer designated fixtures to full output during power loss or emergency events. Housed in a UL plenum-rated enclosure, the controller supports integration with remote test switches and fire alarm interfaces and includes a dual-color LED for status indication. Ideal for commercial and institutional applications, it enables reliable emergency response while maintaining seamless communication within the DOMINO network.