Duracell Specialty Alkaline MN21 Battery 12V, pack of 2 (A23 / 23A / V23GA / LRV08 / 8LR932) designed for use in remote controls, wireless doorbells and security systems : Amazon.co.uk: Electronics & Photo
Amazon.com: PKCELL 23A A23 23AE MN21 12v Battery Keyless Car Remote Control Replacement - 5 Count : Health & Household