Information:Both sides of this fishing annunciator have button strip, which can be directly installed on fishing rod, with fishing string getting through grooves. when fish bites clasp which causes string drawing or gives out line-loop signal, which transmitted through fishing string, the on-off on annunciator is immediately touched off, turn on power supply to let it alarm by light and sound. The lower part of this annunciator, it is specially placed power breaking button on-off. When stopping fishing, just to separate annunciator from rod, power supply can be cut off, which can effectively protect longevity of battery.