The Passport™ Rechargeable Battery works with the Passport™ Intelligent Cat Flap & Dog Door and can be used for full operation of the pet door or as a battery-backup in case of a power loss. It is a great alternative to the power adaptor if you do not have a power outlet near your installed Passport or if you don't want a power cord connected to your pet door. The battery is rechargeable, so no need to keep replacing batteries!
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