ZW101 Fingerprint Relay Module Overview The ZW101 Fingerprint Relay Module provides reliable biometric authentication with a built in OLED display and direct support for STM32 development. It is designed to simplify integration of fingerprint security into embedded systems and IoT projects while delivering clear visual feedback during operation. Key benefits Fast and reliable fingerprint recognition for secure user authentication and access control. Real time visual confirmation on the integrated OLED display to reduce setup errors and improve user experience. Direct STM32 compatibility for straightforward integration and programming in embedded projects. Relay output for controlling locks, relays, and other devices without additional interface hardware. Compact design suited for development boards and space constrained applications. What this module solves Replaces password or key based access with biometric authentication that reduces the need for managing codes and physical keys. Provides immediate visual feedback to confirm successful or failed scans, which speeds debugging and user acceptance testing. Lowers development effort by offering a module that plugs into STM32 based systems with predictable behavior and clear status display. Important attributes Function: biometric fingerprint recognition with relay control and on module OLED status display. Compatibility: designed for STM32 development environments and embedded IoT systems. Performance: optimized for quick fingerprint acquisition and reliable match confirmation. Form factor: compact module suitable for integration into control panels, enclosure mounted systems, and prototype boards. Practical use scenarios Access control: integrate into a door lock controller to allow authorized users to open doors without keys or codes. Smart home automation: authenticate users to enable or disable systems such as alarms, lighting scenes, or appliance control. security and equipment locks: secure cabinets, safes, or equipment bays where quick biometric verification is needed. Who should choose this module Engineers, makers, and product developers who need a compact, display equipped biometric module that integrates easily with STM32 based systems and controls external devices via a relay. Technical note The ZW101 is a fingerprint relay module with an integrated OLED display and is intended for use with STM32 development platforms and compatible embedded applications.