{"title":"Voltage controllers","description":null,"products":[{"product_id":"controleur-de-tension-ert300","title":"Ert300 Tension Controller","description":"\u003cp\u003eThe \u003cstrong\u003eERT 300\u003c\/strong\u003e system is the reference tool for players wishing to know the \u003cstrong\u003etension\u003c\/strong\u003e of their string. Indeed, thanks to micro-impulses, the ERT 300 can determine the \u003cstrong\u003edynamic tension\u003c\/strong\u003e of your string, which you can then convert into kilograms to find the tension of your racket. This tool is the most used by \u003cstrong\u003eprofessional stringers\u003c\/strong\u003e on the circuit.\u003c\/p\u003e\n\u003cp\u003eVery simple to use, the ERT 300 must be positioned on the three widest main strings using its small claws. The device will then send micro-impulses to determine the dynamic tension of the string, this value is expressed in DT.\u0026nbsp;\u003cbr\u003eThanks to the \u003cstrong\u003eprovided chart\u003c\/strong\u003e, you can easily convert this data into kilograms or pounds.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eWarning, the tension measured coming out of the stringing machine may differ from that chosen on the machine depending on the stringer's skill level.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eThe ERT 300 operates with two CR2032 batteries supplied.\u0026nbsp;\u003c\/em\u003e\u003c\/p\u003e","brand":"Ert","offers":[{"title":"Default Title","offer_id":57180059402620,"sku":"330200022","price":299.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/7802\/2780\/files\/fa324a2aa9cda4b4f2a23e77e1a7b1e22ecc2f96_330200022_1.webp?v=1784229586"}],"url":"https:\/\/www.tennispro.be\/en\/collections\/voltage-controllers.oembed","provider":"TENNISPRO","version":"1.0","type":"link"}