{"product_id":"linear-act-31b-megacode-1-channel-block-coded-key-ring-transmitter-black-replaces-act-21a","title":"Linear ACT-31B MegaCode 1-Channel Block Coded Key Ring Transmitter, Black (Replaces ACT-21A)","description":"Single-channel block coded key ring transmitter designed for access control systems. Features factory-preprogrammed MegaCode format with over 1,000,000 unique codes, virtually eliminating code duplication. The receiver learns each specific code, preventing unauthorized access through transmitter reprogramming.\u003cbr\u003e\u003cbr\u003eIncludes quick-disconnect key ring and lithium batteries with five-year service life. Built-in 10-second time-out feature prevents system shutdown from continuous transmission. Compatible with all MegaCode receivers and controllers.\u003cbr\u003e\u003cbr\u003eIdeal for single-family, multi-tenant, and commercial applications. Suitable for everyday installations where reliable, secure access control is required.","brand":"Raztechs","offers":[{"title":"Default Title","offer_id":50117508301077,"sku":null,"price":73.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/5394\/0757\/files\/40_1b59409c-7903-40ce-b199-d97bb868f0c1.jpg?v=1787535158","url":"https:\/\/www.raztechs.com\/products\/linear-act-31b-megacode-1-channel-block-coded-key-ring-transmitter-black-replaces-act-21a","provider":"Raztechs","version":"1.0","type":"link"}