The Gardner ATTs Alarm Batteries are specifically designed for use with Gardner Tackle ATTs Silent Alarms, providing reliable power for your bite indication system. Each alarm requires one battery for operation. These batteries are a direct replacement, ensuring continued performance from your ATTs Silent Alarms. - Battery type: GP476A - Quantity: Pack of 3 batteries - Recommended for Gardner ATTs Silent Alarm - One battery required per alarm It is advisable to consult the instruction manual for your ATTs Silent Alarm when replacing batteries.