Snger LED all-round running pose The Saenger IQ-LED Control floats have an integrated bite indicator in the antenna. By means of a built-in acceleration sensor, the float recognizes when a fish bites. When a fish bites, the antenna immediately changes color. The color change is clearly visible both during the day and at night. The sensor is so clever that it can easily distinguish between a normal sideways movement (swell, current) and a bite. The battery is built directly into the antenna. The floats are powered by a 3V lithium rod battery.