{"product_id":"12v-fail-secure-electric-mortise-drop-bolt-lock-key-cylinder","title":"12V Fail Secure Electric Mortise Drop Bolt Lock with Key Cylinder","description":"\n\u003ch2\u003e12VDC Fail Secure Electric Mortise Drop Bolt Lock with Key Cylinder\u003c\/h2\u003e\n\u003cp\u003eUpgrade your access control system with this \u003cstrong\u003e12VDC Electric Mortise Drop Bolt Lock\u003c\/strong\u003e from Asia-Teco (Model B9L). Built from durable \u003cstrong\u003ealuminum alloy\u003c\/strong\u003e, this fail-secure electronic door lock keeps your door locked whenever power is off — making it the ideal choice for security-critical applications in offices, server rooms, storage facilities, and controlled-access entryways.\u003c\/p\u003e\n\n\u003cp\u003eWith its built-in \u003cstrong\u003ekey cylinder override\u003c\/strong\u003e, adjustable \u003cstrong\u003etime delay settings (0, 3, or 6 seconds)\u003c\/strong\u003e, and clear \u003cstrong\u003eLED status indicators\u003c\/strong\u003e (green for unlocked, red for locked), this lock delivers both convenience and reliable security. CE and FCC certified. Made in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFail Secure (NO Lock):\u003c\/strong\u003e Door remains locked when power is off — ideal for high-security access points\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAluminum Alloy Construction:\u003c\/strong\u003e Robust and corrosion-resistant for long-lasting durability\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustable Time Delay:\u003c\/strong\u003e Choose 0, 3, or 6 seconds to suit your access workflow\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLED Status Display:\u003c\/strong\u003e Green indicates unlocked; Red indicates locked — at-a-glance monitoring\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDoor Status Signal Output:\u003c\/strong\u003e Integrates seamlessly with access control panels and alarm systems\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKey Cylinder Override:\u003c\/strong\u003e Manual key access for emergency or backup entry\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Operating Temperature Range:\u003c\/strong\u003e Functions reliably from -10°C to +55°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCE \u0026amp; FCC Certified:\u003c\/strong\u003e Meets international safety and electromagnetic compatibility standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAsia-Teco\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eB9L\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluminum Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWorking Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFail Secure (Power Off = Locked)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC 12V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWorking Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e80 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStart Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1300 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTime Delay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 \/ 3 \/ 6 Seconds (selectable)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLED Indicator\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGreen = Unlock \/ Red = Lock\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSignal Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDoor status contact output\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-10°C to +55°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCE, FCC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhy Choose a Fail Secure Lock?\u003c\/h3\u003e\n\u003cp\u003eA \u003cstrong\u003efail secure lock\u003c\/strong\u003e (also called a \"normally open\" or NO lock) remains in the locked state during a power outage. This is the preferred configuration for high-security areas where unauthorized access must be prevented even during emergencies. For guidance on best practices for electronic access control and building security, refer to the U.S. Consumer Product Safety Commission (CPSC).\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What does \"fail secure\" mean for this electric mortise drop bolt lock?\u003c\/h4\u003e\n\u003cp\u003eA: Fail secure means the lock defaults to the \u003cstrong\u003elocked position whenever power is interrupted\u003c\/strong\u003e. Unlike fail-safe locks that open during a power failure, this model keeps the door securely locked, which is essential for server rooms, vaults, and other high-security access points.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can this electric drop bolt lock be used with an access control system?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The Asia-Teco B9L includes a \u003cstrong\u003edoor status signal output contact\u003c\/strong\u003e, allowing it to integrate with most standard access control panels, keypads, card readers, and alarm systems. Simply wire the signal output to your controller for full monitoring capability.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How does the adjustable time delay work on this electronic door lock?\u003c\/h4\u003e\n\u003cp\u003eA: The time delay setting determines how long the lock remains unlocked after a valid access signal is sent. You can select \u003cstrong\u003e0, 3, or 6 seconds\u003c\/strong\u003e depending on how much time you need for the door to be opened before it automatically re-locks — helpful for high-traffic or ADA-compliant access points.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does this lock include a manual override option?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The built-in \u003cstrong\u003ekey cylinder\u003c\/strong\u003e allows authorized personnel to manually lock or unlock the door independently of the electronic system — providing a reliable backup entry method in case of power or system failure.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does \\\"fail secure\\\" mean for this electric mortise drop bolt lock?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Fail secure means the lock defaults to the locked position whenever power is interrupted. 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