Fit the Strike Alert to your rod tip and relax. The Strike Alert with Flash Indicator will signal you when a fish takes your bait. Visible from 100 yards, simply place the Strike Alert 2 below your rod tip. The indicator will begin to flash green until a fish strikes your bait. At that point, the Strike Alert begins flashing red. Units turn off automatically when removed from the rod. A saltwater model fits all saltwater and catfish rods (that typically have larger diameter rod tips). The freshwater model fits all freshwater rods. - Available: Freshwater Rods, Saltwater/Catfish Rods. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Strike Alert.