{"product_id":"dc12v-electric-drop-bolt-lock-nc-fail-safe-mortise-lock-time-delay","title":"DC12V Electric Drop Bolt Lock NC Fail Safe | Mortise Lock","description":"\n\u003ch2\u003eDC12V Electric Drop Bolt Lock — NC Fail Safe Mode with Adjustable Time Delay\u003c\/h2\u003e\n\u003cp\u003eTake control of your access control system with this robust \u003cstrong\u003eElectric Drop Bolt Lock\u003c\/strong\u003e. Designed for exposed surface-mount installation, this NC (Normally Closed) electronic mortise lock uses the precise on\/off switching of electrical current to drive the extension and retraction of the stainless steel lock bolt — locking and unlocking your door reliably every single time. Made in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Choose This Electric Drop Bolt Lock?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile Compatibility:\u003c\/strong\u003e Suitable for wooden doors, fireproof doors, and metal doors — ideal for offices, warehouses, server rooms, and residential entryways.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFail Safe NC Design:\u003c\/strong\u003e In a power outage, the lock defaults to the open (unlocked) position, ensuring safe egress in emergencies.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustable Time Delay:\u003c\/strong\u003e Intelligent single-chip configuration allows you to fine-tune the unlock delay to match your specific access control workflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra-Low Power Consumption:\u003c\/strong\u003e Starting current of just 0.9A settling to 0.2A — energy-efficient for 24\/7 operation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra-Low Operating Temperature:\u003c\/strong\u003e Engineered for cooler surface temperatures during extended operation, extending the lifespan of the lock.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExceptional Durability:\u003c\/strong\u003e Rated for \u003cstrong\u003e500,000 cycles\u003c\/strong\u003e of powered locking — built to last in high-traffic environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Strength Construction:\u003c\/strong\u003e Zinc alloy lock body with stainless steel bolt and a high-strength aluminum alloy panel featuring flash silver sandblast finish.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eImpressive Holding Force:\u003c\/strong\u003e Lock bolt withstands up to \u003cstrong\u003e800 kg of pressure\u003c\/strong\u003e — providing serious physical security.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMagnetic Door Sensor:\u003c\/strong\u003e Integrated magnetic sensing detects door gaps up to 6mm, enabling smart door status monitoring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFull Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWorking 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\u003eStarting Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.9A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStabilizing Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLock Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNC (Normally Closed) — Fail Safe\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLock Body Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e150mm (L) × 34mm (W) × 28mm (H)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBolt Extension Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e18mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBolt Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHolding Strength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 800 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMagnetic Sensing Distance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Humidity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0–90% RH\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDurability Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e500,000 cycles\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLock Body Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh-strength zinc alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBolt Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePanel Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluminum alloy, flash silver sandblast\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\u003eMainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1× Electric Drop Bolt Lock Set\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eImportant Notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eColors may vary slightly from product images due to screen calibration differences.\u003c\/li\u003e\n  \u003cli\u003ePlease allow ±1mm–10mm tolerance due to manual measurement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eLearn More About Access Control \u0026amp; Electrical Safety\u003c\/h3\u003e\n\u003cp\u003eFor guidance on electrical safety standards relevant to electronic security hardware, visit 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 \"NC Type\" (Normally Closed) mean for this electric drop bolt lock?\u003c\/h4\u003e\n\u003cp\u003eA: NC (Normally Closed) means the lock bolt is \u003cstrong\u003eextended and locked when power is applied\u003c\/strong\u003e. When power is cut — whether intentionally or during a power outage — the bolt retracts and the door can be opened. This is also called \"Fail Safe\" mode, as it prioritizes safe exit in emergency situations.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What types of doors is this electric drop bolt lock compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This exposed-mount electric drop bolt lock is compatible with a wide range of door types, including \u003cstrong\u003ewooden doors, fireproof doors, and metal doors\u003c\/strong\u003e. Its surface-mount design makes installation straightforward without requiring complex mortising of the door frame.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What access control systems can I integrate this DC12V mortise lock with?\u003c\/h4\u003e\n\u003cp\u003eA: This lock operates on a standard DC 12V signal, making it compatible with most common access control systems including keypad controllers, card readers, RFID systems, and biometric access panels that provide a 12V output relay signal.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the adjustable time delay feature?\u003c\/h4\u003e\n\u003cp\u003eA: The intelligent single-chip microcontroller built into this lock allows you to configure a custom time delay between receiving the unlock signal and when the bolt retracts. This is useful for tailoring door access timing to your specific security workflow — for example, allowing a brief delay before the door can be pushed open.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does \\\"NC Type\\\" (Normally Closed) mean for this electric drop bolt lock?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"NC (Normally Closed) means the lock bolt is extended and locked when power is applied. When power is cut — whether intentionally or during a power outage — the bolt retracts and the door can be opened. 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