FlashAlertģ warns you of a weak battery - before your pet gets loose No more guessing when to change the battery. Never purchase an expensive battery you don't need. This patented feature will flash brightly to alert you when the receiver battery needs changing. Knowing when to change the battery in your petís collar is a critical requirement for safe pet containment. PET STOPíS exclusive feature FlashAlert will remind you to replace the battery before your pet gets loose.

Battery Duty Cycling
This patented feature extends the battery life to its maximum potential. With Pet Stop your batteries last up to one full year.