{"product_id":"united-scientific-supplies-tgky01-telegraph-key","title":"United Scientific: TGKY01 Telegraph Key (Secondary Study)","description":"\u003cp\u003eA hands-on telegraph key for exploring the tactile action and timing of manual Morse-code operation during a history-of-communication study.\u003c\/p\u003e\u003ch3\u003eEducational Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSubject:\u003c\/strong\u003e Technology History; Communication; Physical Science\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade \/ Age Level:\u003c\/strong\u003e Suggested instructional use: secondary study with adult guidance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e Telegraph key mounted on a plastic base\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e United Scientific\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e TGKY01\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase Dimensions:\u003c\/strong\u003e 11 × 5 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterials:\u003c\/strong\u003e ABS base with stainless steel connections\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnections:\u003c\/strong\u003e Two screw-type connecting terminals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e India\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTactile History Activity\u003c\/h3\u003e\u003cp\u003eStudents press and release the key to explore its mechanical feel and practice short and long Morse-code timing patterns. This unpowered activity focuses on the physical experience of operating a telegraph key; no batteries, wiring, or additional circuit parts are needed for this use.\u003c\/p\u003e\u003cp\u003eThe key alone does not transmit messages or produce an electrical light or sound signal. Visual message exchange is practiced separately with the bundle’s two signaling lights.\u003c\/p\u003e","brand":"United Scientific","offers":[{"title":"Default Title","offer_id":68446251319547,"sku":"B01MT3T676","price":8.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0814\/4538\/8539\/files\/51OGNtXrANL._SL1000.jpg?v=1793486706","url":"https:\/\/dandelionrootsshop.com\/products\/united-scientific-supplies-tgky01-telegraph-key","provider":"Dandelion Roots","version":"1.0","type":"link"}