Eveready A23 Batteries (2-Pack), 12V Miniature Alkaline Specialty Batteries A23BPZ-2 - The Home Depot
Energizer A23 Battery, 12 Volt - 2 Pack Great for Electronics Like A23 12 Volt Photo / Garage Door Opener / Electronic Keychain Eveready Energizer Battery 2 Pack - Walmart.com