Energizer Specialty A23 Alkaline 23a Security Batteries (2-Pack) in the Device Replacement Batteries department at Lowes.com
Amazon.com: Synergy Digital Energizer A23 Battery Combo Pack - Pack of 2 12V Mercury-Free Alkaline Batteries Use for Headsets Garage Door Openers Remote Controls Home Security Systems Car Locking Device & More :
Amazon.com: Golden Power A23M 12V Alkaline Battery Maxi Plus Incredibly Safe Version Ecototal,5 Count (Pack of 1) : Health & Household
Eveready A23 Batteries (2-Pack), 12V Miniature Alkaline Specialty Batteries A23BPZ-2 - The Home Depot
Amazon.com: MJKAA 10 Count A23 23a 12 Volt Battery for Garage Doors Opener, Doorbells Remotes MN21 23GA GP23AE A23S LR23A L1028 : Tools & Home Improvement