Manuals Brands Optimus - Katadyn Products Inc. Optimus - Katadyn Products Inc. Manuals ProdManuals has 5 Optimus - Katadyn Products Inc. manuals covering 5 models. Popular Categories: VCR Cassette Player Cassette Player Models Dual Cassette Dubbing Deck SCT-540 High-Speed Dubbing Stereo Cassette Deck SCT-56 VCR Models 111 61 110/MODEL 60