Found in many configurations throughout the world, drop-arm signals not only provide audio and visual warnings (bells and lights), but lower a physical barrier to prevent pedestrians or vehicles from entering dangerous areas. When activated, our unit starts to flash and ring, and after 5 seconds, lowers the arm. The RMI unit is operated by dual 12 Vdc linear actuators. The standard model has 2 flashing lights mounted on the pole, additional lights on the arm, and an automatic gong. Options include additional flashing lights, cast base boxes, battery power supplies, and solar power options.