{"product_id":"telephone-indicator-relay-qty-2","title":"Telephone indicator relay Qty 2","description":"\u003cp\u003eEricsson Mining Magneto-Telephone Indicator Relay, Type N.6652. A rugged signalling relay used in underground mining telephone systems, operating via magneto hand-cranked calls to activate visual indicators or alarms. BOOM! Certified by the Mines Department (1933), reflecting safety-approved communications equipment for hazardous environments. Housed in oak cases for durability. c.1930s.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eW9 x D15 x H7 cm.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eUntested.\u003c\/p\u003e","brand":"Ericsson","offers":[{"title":"Default Title","offer_id":58303701287299,"sku":"TEL-774","price":290.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1023\/0612\/0067\/files\/IMG_6842telephone_indicator_relay_electrical_scientific_Industrial_powerhouse_props_prop_rental_hire_vintage_movie_film_set_dec.jpg?v=1782051856","url":"https:\/\/www.ukvintage.co.uk\/products\/telephone-indicator-relay-qty-2","provider":"UK Vintage","version":"1.0","type":"link"}