Replacement battery for DS. Specifications: 1200mAh, 4.5V, Alkaline. Compatible with: DS, LS, DS-T. Replaces: Safe-O-Tronic 38400200, Safe-O-Tronic 198182, Safe-O-Tronic PA100043. Safe-O-Tronic replacement battery designed for Door Lock devices. Dependable performance you can count on.