{"product_id":"dc12v-waterproof-electric-drop-bolt-door-lock-auto-time-delay","title":"DC12V Waterproof Electric Drop Bolt Door Lock | Auto Time Delay","description":"\n\u003ch2\u003eDC12V Waterproof Electric Drop Bolt Door Lock with Auto Time Delay \u0026amp; Feedback\u003c\/h2\u003e\n\u003cp\u003eUpgrade your access control system with the \u003cstrong\u003eAsia-Teco SM603 Electric Drop Bolt Door Lock\u003c\/strong\u003e. Engineered for both indoor and outdoor use, this robust electronic cylinder lock delivers dependable automated locking with a built-in time delay function and optional feedback signal — making it ideal for offices, warehouses, apartments, gates, and commercial entrances.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWaterproof Design:\u003c\/strong\u003e Fully weatherproof construction keeps the mechanism protected from rain, humidity, and outdoor elements for long-lasting performance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDC 12V Operation:\u003c\/strong\u003e Compatible with standard 12V DC power supplies used in most access control setups — easy to integrate into existing systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3-Wire \u0026amp; 5-Wire Options (SM603-3 \/ SM603-5):\u003c\/strong\u003e Choose between 3-wire or 5-wire configurations to match your wiring setup and control requirements.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAutomatic Time Delay:\u003c\/strong\u003e Programmable auto time delay function ensures the door relocks automatically after a set period — no manual intervention needed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInduction Sensing:\u003c\/strong\u003e Built-in induction technology detects door status reliably for smarter, more responsive access control.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptional Feedback Signal:\u003c\/strong\u003e Select the feedback (signal output) variant to integrate door status monitoring into your security panel or alarm system.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePunch-Free Installation:\u003c\/strong\u003e Convenient punch-free mounting method simplifies installation without major modifications to your door frame.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrop Bolt Mechanism:\u003c\/strong\u003e The solid drop bolt provides strong, secure locking force suitable for a wide range of door types and weights.\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\u003eSM603-3 \/ SM603-5\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC 12V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWire Options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-Wire or 5-Wire\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInstallation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePunch-Free\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFeedback\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOptional\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeatherproofing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWaterproof\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\u003eIdeal Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eOffice and commercial building access control\u003c\/li\u003e\n  \u003cli\u003eApartment and residential security systems\u003c\/li\u003e\n  \u003cli\u003eGate and perimeter entry points\u003c\/li\u003e\n  \u003cli\u003eWarehouses, storage units, and server rooms\u003c\/li\u003e\n  \u003cli\u003eIntegration with keypad, card reader, or intercom systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSafety \u0026amp; Standards\u003c\/h3\u003e\n\u003cp\u003eFor guidance on best practices for electronic access control and door hardware safety, visit the U.S. Consumer Product Safety Commission (CPSC) for relevant consumer product safety information.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the difference between the 3-wire (SM603-3) and 5-wire (SM603-5) versions of this electric drop bolt lock?\u003c\/h4\u003e\n\u003cp\u003eA: The 3-wire version (SM603-3) provides basic locking and unlocking control via three wires, making it suitable for simpler access control setups. The 5-wire version (SM603-5) offers additional functionality — typically including door status feedback signals — allowing integration with alarm panels, security monitoring systems, or more advanced controllers.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this electric drop bolt lock suitable for outdoor use?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The Asia-Teco SM603 electric drop bolt door lock features a waterproof construction that protects internal components from rain, moisture, and humidity, making it well-suited for outdoor gates, exterior doors, and covered outdoor entryways.\u003c\/p\u003e\n\u003ch4\u003eQ: How does the auto time delay function work on this electronic cylinder lock?\u003c\/h4\u003e\n\u003cp\u003eA: The built-in time delay feature keeps the door unlocked for a preset duration after receiving an access signal, then automatically re-engages the drop bolt to secure the door — eliminating the need to manually trigger relocking. This is especially useful in high-traffic access points.\u003c\/p\u003e\n\u003ch4\u003eQ: What power supply do I need for this DC12V electric drop bolt lock?\u003c\/h4\u003e\n\u003cp\u003eA: This lock requires a standard DC 12V power supply, which is the most common voltage used in access control systems. Most existing access control panels and standalone 12V adapters are compatible. Ensure your power supply has sufficient amperage for reliable operation.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the difference between the 3-wire (SM603-3) and 5-wire (SM603-5) versions of this electric drop bolt lock?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The 3-wire version (SM603-3) provides basic locking and unlocking control via three wires, making it suitable for simpler access control setups. 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