{"product_id":"fail-secure-silent-motor-mortise-lock-electric-bolt-access-control","title":"Fail Secure Silent Motor Mortise Lock | Electric Bolt Access Control","description":"\n\u003ch2\u003eAsia-Teco Silent Motor Mortise Lock – Fail Secure Electric Bolt Style\u003c\/h2\u003e\n\u003cp\u003eUpgrade your door access control system with the \u003cstrong\u003eAsia-Teco B12L Motor Mortise Lock\u003c\/strong\u003e. Designed to look like a classic electric bolt lock but powered by a precision clutch motor, this fail-secure lock offers whisper-quiet operation, intelligent tongue detection, and ultra-low power consumption — making it ideal for offices, server rooms, apartments, and commercial access control installations.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFail Secure (Power-On Unlock):\u003c\/strong\u003e The lock remains locked when power is off and unlocks only when power is applied — keeping your space secure during outages.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSilent Operation:\u003c\/strong\u003e Clutch motor drive ensures near-silent locking and unlocking cycles, ideal for quiet environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDoor Status Feedback:\u003c\/strong\u003e Built-in magnetic door contact provides NO\/COM signal output so your access control panel always knows whether the door is open or closed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustable Trigger Logic:\u003c\/strong\u003e High-level or low-level trigger and door status sensor enable\/disable are easily configured via a DIP code switch — no rewiring required.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntelligent Tongue Detection:\u003c\/strong\u003e Automatically senses lock tongue status to prevent false lock confirmation and protect the mechanism.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra-Low Power Consumption:\u003c\/strong\u003e Operating current under 0.3A at DC 12V or 24V keeps energy costs minimal.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExceptional Durability:\u003c\/strong\u003e Engineered and tested for over 200,000 operation cycles, ensuring years of reliable service.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptional Oblique Tongue Locator:\u003c\/strong\u003e Makes alignment and installation smoother, especially on doors with minor frame gaps.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAluminium Alloy Construction:\u003c\/strong\u003e Lightweight yet sturdy housing built for long-term commercial or residential use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\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\u003eB12L\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLock Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFail Secure – Power-On Unlock (Power-Off Locked)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluminium Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLock Body Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eL200 × W28 × H50.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInbuilt Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eL145 × W26.5 × H48 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLock Tongue Protrusion\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLength 21 mm × Width 30 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWorking Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC 12V \/ 24V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWorking Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.3A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDoor Contact Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNO \/ COM\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCycle Life Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200,000+ operations\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 China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Asia-Teco B12L Motor Mortise Lock\u003c\/li\u003e\n  \u003cli\u003eMounting hardware\u003c\/li\u003e\n  \u003cli\u003eUser manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eLearn More About Access Control Standards\u003c\/h3\u003e\n\u003cp\u003eFor guidance on physical security and access control best practices, visit the U.S. Consumer Product Safety Commission (CPSC) for safety standards on electronic hardware and devices.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What does \"fail secure\" mean for this motor mortise lock?\u003c\/h4\u003e\n\u003cp\u003eA: A fail secure lock stays \u003cstrong\u003elocked when power is cut\u003c\/strong\u003e. Power must be actively applied to retract the bolt and allow entry. This is ideal for security-sensitive areas where you want doors to default to a locked state during a power failure.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this lock compatible with standard access control systems?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The Asia-Teco B12L operates on DC 12V or 24V and features adjustable high-level\/low-level trigger logic via DIP switch, making it compatible with most standard access control panels, keypads, card readers, and intercoms.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How noisy is the lock during operation?\u003c\/h4\u003e\n\u003cp\u003eA: This lock is specifically engineered for \u003cstrong\u003esilent or near-silent operation\u003c\/strong\u003e using a precision clutch motor. It is well-suited for libraries, offices, hotel corridors, and other quiet environments where a loud solenoid click would be disruptive.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I configure the door status sensor?\u003c\/h4\u003e\n\u003cp\u003eA: The door status sensor (enable\/disable) and trigger level (high\/low) are both configurable by adjusting the on-board \u003cstrong\u003eDIP code switch\u003c\/strong\u003e — no soldering or wiring changes needed. Refer to the included user manual for switch position diagrams.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What type of doors is this lock suitable for?\u003c\/h4\u003e\n\u003cp\u003eA: The B12L is designed for \u003cstrong\u003einward or outward opening single doors\u003c\/strong\u003e — commonly used on office doors, apartment entry doors, server room doors, and interior security doors. The optional oblique tongue locator helps with alignment on doors that have slight frame misalignment.\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 motor mortise lock?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A fail secure lock stays locked when power is cut. Power must be actively applied to retract the bolt and allow entry. This is ideal for security-sensitive areas where you want doors to default to a locked state during a power failure.\"}}, {\"@type\": \"Question\", \"name\": \"Is this lock compatible with standard access control systems?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. 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