Visibility should not end at sunset. In a parking area, along a walkway closure, or at an outdoor entry, this flashing yellow LED beacon marks the top of a Tempest stanchion so the barrier line reads clearly in low light and poor weather. The beacon (SKU 90-5004SB/YL) attaches with a simple twist and runs on solar power, charging through the day and flashing through the night without wiring, outlets, or battery swaps. Set it on any Tempest post that needs after-hours attention and let the sun handle the daily upkeep.