TTLock Bluetooth Access Controller – Wiegand Relay NO/NC PCB Board

TTLock Smart Bluetooth Access Controller – Wiegand Relay NO/NC PCB Board

Take full control of your door access system with the TTLock App Bluetooth Access Controller PCB Board. 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.

Key Features

• TTLock App Compatible: Manage access permissions, schedules, and user credentials directly from your smartphone via Bluetooth using the free TTLock application (iOS & Android).
• Wiegand Interface Support: Compatible with standard Wiegand 26/34 card readers, keypads, and biometric devices for flexible system integration.
• Relay NO/NC Output: Supports both Normally Open (NO) and Normally Closed (NC) relay configurations, making it suitable for a wide range of electric locks and door hardware.
• Fail Secure Mode: Operates in Fail Secure (locked by default on power loss), providing an added layer of physical security for sensitive areas.
• Exit Button Terminal: Dedicated wiring terminal for an exit request button, enabling safe and convenient egress from the secured side.
• Compact PCB Design: Low-profile board is easy to install inside standard access control enclosures or custom housings.
• Multi-User Management: Issue, revoke, and schedule access credentials for multiple users remotely through the TTLock app — no dedicated computer required.
• Model: SN991-3-1-TT | Brand: Asia-Teco

Specifications

What's in the Box

• 1 × TTLock Bluetooth Access Controller PCB Board (SN991-3-1-TT)
• Installation hardware & documentation

Who Is This For?

This 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.

For 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.

Frequently Asked Questions

Q: What app do I need to control this TTLock Bluetooth Access Controller?

A: 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). Once paired via Bluetooth, you can manage users, set time-based schedules, and monitor access logs directly from your smartphone.

Q: Does this controller work with my existing Wiegand card reader or keypad?

A: Yes. The controller features a standard Wiegand 26/34 interface, 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.

Q: What is the difference between NO (Normally Open) and NC (Normally Closed) relay modes?

A: In Normally Open (NO) mode, the relay circuit is open (lock remains locked) until triggered — power is needed to unlock. In Normally Closed (NC) 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 Fail Secure mode, meaning the door stays locked if power is lost.

Q: Can I grant temporary or scheduled access to specific users?

A: 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.