A leader in the development and marketing of do-it-yourself video security products, DEFENDER systems are distributed through various mass merchants, distributors and online retailers. By offering simple, affordable security solutions that anyone can easily set up themselves, DEFENDER aims to satisfy the needs of both business and home owners who want their assets, loved ones, and properties protected. Check out our 20 Defender coupons, including Defender promo codes & 17 deals. Today's top Defender coupon: $80 Off Sitewide.