Image Item No. Description  1342-1 (Inv)  Electric Switches and Tiles 10 Parts, 1986 Catalog: Sets: Educational & Dacta: Service Packs: Technic  1343-1 (Inv)  Optosensors (4.5V) and Discs 4 Parts, 1986 Catalog: Sets: Educational & Dacta: Service Packs: Technic  1344-1 (Inv)  Light Bricks (4.5V) 12 Parts, 1986 Catalog: Sets: Educational & Dacta: Service Packs  1345-1 (Inv)  Pinions, Pegs, Axles and Nuts 62 Parts, 1986 Catalog: Sets: Educational & Dacta: Service Packs: Technic