Replacement battery for Baby Monitor. Specifications: 1100mAh, 4.8V, Nickel Cadmium (NICD). Compatible with: Baby Monitor. Replaces: 4SN-AA110-W-JP2, 0209A, 0210A, 2090, 2720, HK1100AAE4BMJS and 2 more. Hong Kong Batteries replacement battery designed for Baby Monitor devices. Perfect for professional or everyday use.