Fishing bite alarms wireless sets, controlled by chips, its sensitivity, volume and tone can be adjusted, and crust waterproof performance is good, novel design. Comprises of 4 indicators and one receiver, each indicator has an item code to easy find which one send the signal. Reception distance is about 100M-120M. This model exempts attention to buoy when fishing, to realize multiple poles in charge by one people( ROHS Approved)