The ATTa alarm can be used independently, indicating a bite via its inbuilt speaker and can also be used with a paired ATT receiver, allowing for less disturbance in a swim.
Features:
Inbuilt speaker
High Power transmitter
Intelligent bite indication
Low battery warning
LED driven wheel illumination
Betalight accommodation
Super strong fixing bolt
Ultra high snag ears
Adjustable sensitivity
Water protected (IP67)
Protective hard cover