Meet the RYNX S4 Tuya Smart Fingerprint Lock — a premium indoor electronic lock that combines robust security with everyday convenience. Built for bedrooms, homes, and hospitality spaces, it delivers flexible access options including fingerprint, password, Tuya Bluetooth, temporary codes, and a mechanical key for absolute peace of mind.

Versatile Unlock Methods for Any Scenario

• Fingerprint access supporting up to 50 unique profiles for quick, contactless entry
• Passwords up to 50 codes, with a dedicated digital keypad for secure code entry
• Tuya Bluetooth unlocking via the Tuya Smart App for convenient, smartphone-based access
• Temporary password codes to grant time-limited access to guests or service providers
• Mechanical key fallback for guaranteed entry if electronic methods aren’t available

Durable Hardware Designed for Real Life

• Premium construction using profile aluminum and zinc alloy for strength and longevity
• Adaptive door thickness compatibility: 28–50 mm
• LED digital display that clearly shows operation steps in any lighting
• Power options: operates with 4 AAA batteries (not included) and features an emergency USB-C charging port for power-bank unlocking if batteries are depleted
• Comprehensive installation and usage manual included to simplify setup and daily use

Smart App Experience and Setup

• Settings and control through the Tuya Smart App; note that only one phone can be connected to one device at a time, with in-app sharing available to grant access to others
• Virtual password feature to prevent peeping and password leakage, even in busy environments
• LED display provides step-by-step guidance for flawless operation under any lighting condition

Ideal Use Cases

• Perfect for bedrooms, family homes, and hotel rooms where secure, rapid access is essential