Replace the battery in your PetSafe 100m or Basic Remote Trainer or older model of the Deluxe In-Ground Cat Fence System. This 2-pack of 3-volt coin cell batteries has a 5-year shelf life and typically lasts 1-3 months.

• Compatible with PetSafe Remote Trainers and older models of the Deluxe In-Ground Cat Fencesystem:
• 100m Little Dog Remote Trainer (PDT20-10644)
• 100m Big Dog Remote Trainer (PDT20-10645)
• ST-100-LD Little Dog Remote Trainer (PDT17-13471, PDT45-13472)
• ST-100-BD Big Dog Remote Trainer (PDT17-13473, PDT45-13474)
• ST-70 70 m Basic Remote Trainer (PDT17-13480, PDT45-13481)
• Deluxe In-Ground Cat Fence (model purchased before August 2010, PCF-1000-20)
• Deluxe In-Ground Cat Fence Extra Receiver Collar (model purchased before August 2010, PCF-275-19)