{"product_id":"potter-bmc-33b-anti-defeat-double-bias-contact-high-security","title":"Potter BMC-33B Anti-Defeat Double Bias Contact, HIgh Security","description":"The BMC-33B Anti-Defeat Magnetic Contacts are uniquely designed and constructed to make defeating almost impossible. The switch housing contains specially arranged reed switches. These reed switches are pre-set in a biased format with ring magnets, producing a symmetrical magnetic field.\n\nThe magnetic layout is designed with a combination of three polarized magnets. This switch and magnetic combination produces a perfect symmetrical magnetic field in a balanced condition, as if no magnet field existed. Any attempt to bypass or defeat the BMC-33B with an external magnet will cause the magnetic fields to be imbalanced, thus causing an alarm condition.\n\u003ch4\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1 3\/8” to 3” operating gap\u003c\/li\u003e\n  \u003cli\u003e24” armored cable\u003c\/li\u003e\n  \u003cli\u003eCorrosion resistant\u003c\/li\u003e\n  \u003cli\u003eAlnico 6 magnet\u003c\/li\u003e\n  \u003cli\u003eAnodized aluminum housing\u003c\/li\u003e\n  \u003cli\u003ecompatible with: \u003ca href=\"https:\/\/www.fireandsafetyplus.com\/product\/potter-potter-27-111l-l-bracket-for-odc-59\/\" target=\"_blank\" rel=\"noopener\"\u003e27-111L L-Bracket\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Potter","offers":[{"title":"Default Title","offer_id":43247150104641,"sku":"AS-BMC33B","price":37.55,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0700\/2465\/9009\/files\/b20b0167-1018877942_1.jpg?v=1773115732","url":"https:\/\/www.fireandsafetyplus.com\/products\/potter-bmc-33b-anti-defeat-double-bias-contact-high-security","provider":"Fire and Safety Plus","version":"1.0","type":"link"}