Amazon.com: Synergy Digital Replacement Battery, Compatible with Radio Shack 23-144 Replacement, (Alkaline, 12V, 33 mAh) Battery : Health & Household
Energizer Specialty A23 Alkaline 23a Security Batteries (2-Pack) in the Device Replacement Batteries department at Lowes.com
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
A23 Size Alkaline Batteries 12 Volt, 2 Per Card
Amazon.com: 8 x Energizer 23A A23 12 Volt Alkaline Battery 2 on a Card, in Original Energizer Packaging : Health & Household