{"product_id":"extreme-dog-fence-perimeter-technologies-invisible-fence-r21-replacement-collar-7k-1-dog-free-backup-strap","title":"Extreme Dog Fence | Perimeter Technologies Invisible Fence R21 Replacement Collar 7K — 1 Dog + Free Backup Strap","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eeXtreme Dog Fence offers a cost‑effective replacement collar designed to work with certain Invisible Fence systems, powered by Perimeter Technologies electronics. This 7kHz model can help you add a dog to an existing fence or replace a worn unit, with compatibility details clearly outlined for the right setup.\u003c\/p\u003e\n\u003cp\u003eThe collar embraces a lightweight, compact design and is built for daily wear. It weighs about 1.1 oz and is fully waterproof, remaining submersible to 10 ft. This combination supports both everyday outdoor use and more adventurous outings without adding bulk to your dog’s collar.\u003c\/p\u003e\n\u003ch3\u003eCompatibility and frequency\u003c\/h3\u003e\n\u003cp\u003eCompatibility covers Invisible Fence brand in-ground fences prior to the 800 series, including models like ICT-700, ICT-725, ICT-750, ICT-775, ICT-150, ICT-250, ICT-100, ICT-75, ICT-50, AT-950 and CT-4000. It is not compatible with 800-series or later fences, Boundaries Plus, or Shields Indoor units. By default, many Invisible Fence systems run on 7K, but some setups may use 10K to minimize interference.\u003c\/p\u003e\n\u003ch3\u003eBuild, manufacturing, and durability\u003c\/h3\u003e\n\u003cp\u003eManufactured in the USA with a sturdy polycarbonate shell, the collar is designed to resist typical dog wear and chew. The internal electronics are optimized to provide a cost‑effective replacement option while maintaining reliable performance for compatible systems.\u003c\/p\u003e\n\u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1x 7k collar receiver with strap\u003c\/li\u003e\n  \u003cli\u003e2x sets of contacts with comfort covers (short and long)\u003c\/li\u003e\n  \u003cli\u003e2x sets of training covers (short and long)\u003c\/li\u003e\n  \u003cli\u003e1x collar battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy choose this collar\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCost‑effective replacement for adding a dog to an existing fence\u003c\/li\u003e\n  \u003cli\u003eIncludes a free backup collar strap for easy spare replacement\u003c\/li\u003e\n  \u003cli\u003eLightweight and waterproof for daily wear and outdoor activity\u003c\/li\u003e\n  \u003cli\u003eDurable USA‑made construction with a polycarbonate housing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this collar compatible with all Invisible Fence systems?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It works with Invisible Fence inground fences prior to the 800 series and select ICT models; it is not compatible with 800 series or later.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What’s included in the package?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: One 7k collar receiver with strap, two sets of contacts with comfort covers, two sets of training covers, and one collar battery, plus a free backup strap.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Extreme Dog Fence","offers":[{"title":"Default Title","offer_id":57197750681977,"sku":"B00ZS4T57W","price":220.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/8934\/1049\/files\/extremedogfence-invisible-fence-collar-7k.jpg?v=1777736196","url":"https:\/\/petlyvox.com\/products\/extreme-dog-fence-perimeter-technologies-invisible-fence-r21-replacement-collar-7k-1-dog-free-backup-strap","provider":"petlyvox","version":"1.0","type":"link"}