{"product_id":"ttlock-bluetooth-access-controller-wiegand-relay-no-nc-pcb-board","title":"TTLock Bluetooth Access Controller – Wiegand Relay NO\/NC PCB Board","description":"\n\u003ch2\u003eTTLock Smart Bluetooth Access Controller – Wiegand Relay NO\/NC PCB Board\u003c\/h2\u003e\n\u003cp\u003eTake full control of your door access system with the \u003cstrong\u003eTTLock App Bluetooth Access Controller PCB Board\u003c\/strong\u003e. Designed for seamless integration with electric locks, exit buttons, and Wiegand-compatible readers, this compact yet powerful control board brings smart, app-based access management to homes, offices, and commercial properties. Made in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTTLock App Compatible:\u003c\/strong\u003e Manage access permissions, schedules, and user credentials directly from your smartphone via Bluetooth using the free TTLock application (iOS \u0026amp; Android).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWiegand Interface Support:\u003c\/strong\u003e Compatible with standard Wiegand 26\/34 card readers, keypads, and biometric devices for flexible system integration.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRelay NO\/NC Output:\u003c\/strong\u003e Supports both Normally Open (NO) and Normally Closed (NC) relay configurations, making it suitable for a wide range of electric locks and door hardware.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFail Secure Mode:\u003c\/strong\u003e Operates in Fail Secure (locked by default on power loss), providing an added layer of physical security for sensitive areas.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExit Button Terminal:\u003c\/strong\u003e Dedicated wiring terminal for an exit request button, enabling safe and convenient egress from the secured side.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact PCB Design:\u003c\/strong\u003e Low-profile board is easy to install inside standard access control enclosures or custom housings.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-User Management:\u003c\/strong\u003e Issue, revoke, and schedule access credentials for multiple users remotely through the TTLock app — no dedicated computer required.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e SN991-3-1-TT | \u003cstrong\u003eBrand:\u003c\/strong\u003e Asia-Teco\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\u003eModel Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSN991-3-1-TT\u003c\/td\u003e\n\u003c\/tr\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\u003eConnectivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBluetooth (TTLock App)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInterface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWiegand 26\/34\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRelay Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNO \/ NC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSecurity Mode\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFail Secure\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eExit Button\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes (terminal included)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHigh-Concern Chemicals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\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\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × TTLock Bluetooth Access Controller PCB Board (SN991-3-1-TT)\u003c\/li\u003e\n  \u003cli\u003eInstallation hardware \u0026amp; documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003eThis controller is ideal for DIY smart home enthusiasts, security integrators, small business owners, and facilities managers looking to upgrade an existing wired access control system with Bluetooth-based smartphone management — without replacing existing Wiegand readers or electric lock hardware.\u003c\/p\u003e\n\n\u003cp\u003eFor authoritative guidance on electronic security and access control standards, visit the U.S. Consumer Product Safety Commission (CPSC) for safety information on electrical components and consumer electronics.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What app do I need to control this TTLock Bluetooth Access Controller?\u003c\/h4\u003e\n\u003cp\u003eA: This PCB board is designed to work exclusively with the \u003cstrong\u003eTTLock app\u003c\/strong\u003e, available for free on both iOS (Apple App Store) and Android (Google Play). Once paired via Bluetooth, you can manage users, set time-based schedules, and monitor access logs directly from your smartphone.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does this controller work with my existing Wiegand card reader or keypad?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The controller features a standard \u003cstrong\u003eWiegand 26\/34 interface\u003c\/strong\u003e, making it compatible with the vast majority of card readers, keypads, fingerprint scanners, and other Wiegand-output devices already on the market. No need to replace your existing readers.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the difference between NO (Normally Open) and NC (Normally Closed) relay modes?\u003c\/h4\u003e\n\u003cp\u003eA: In \u003cstrong\u003eNormally Open (NO)\u003c\/strong\u003e mode, the relay circuit is open (lock remains locked) until triggered — power is needed to unlock. In \u003cstrong\u003eNormally Closed (NC)\u003c\/strong\u003e mode, the circuit is closed (lock can remain unlocked) until triggered. This controller supports both configurations, giving you flexibility for different electric lock types. The board also operates in \u003cstrong\u003eFail Secure\u003c\/strong\u003e mode, meaning the door stays locked if power is lost.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I grant temporary or scheduled access to specific users?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. Through the TTLock app, you can create time-limited credentials, set recurring weekly schedules, and instantly revoke access for any user — all managed remotely over Bluetooth without requiring a dedicated access control server or PC software.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What app do I need to control this TTLock Bluetooth Access Controller?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This PCB board is designed to work exclusively with the TTLock app, available for free on both iOS (Apple App Store) and Android (Google Play). 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