frm3s5 | Dual-Mode Biometric Module

frm3s5 is a biometric camera module designed for access control and identity verification scenarios, supporting dual-mode authentication of face and palm vein recognition with local storage, 1:N comparison, and rapid UART integration capabilities.

Product Overview

The frm3s5 is a highly integrated embedded biometric module. Its core value lies in integrating face recognition, palm vein recognition, feature library management, and comparison algorithms into a single module, facilitating rapid local identity verification for terminal devices. For projects requiring higher security, lower spoofing risks, and offline availability, it is more suitable for deployment than standard camera modules or single-modal recognition solutions.

This module utilizes a UART communication interface, enabling low-cost integration with access control, attendance, financial terminals, and authorized device motherboards. Since the algorithms and library management are built-in, this solution can complete access control and AI Vision identity verification tasks without relying on the cloud, making it ideal for scenarios with high requirements for response speed and privacy compliance.

Key Features

• Dual-mode biometric recognition: Face + Palm Vein
• Local storage supports 1500 face templates and 500 palm vein users
• Achieves 1:N search without cloud dependency
• Startup time less than 410ms, verification time approximately 1 second
• UART interface for easy embedded system integration
• Wide operating temperature range: -25°C to 70°C

Typical Applications

• Access control systems and localized access control terminals
• Attendance devices, POS terminals, face payment, and identity verification kiosks
• Public service equipment requiring local authentication (e.g., elderly care, social security)
• High-security authorized devices, club management, and driver training authorization
• Embedded AI Vision projects requiring dual-mode recognition and low false acceptance rates

Technical Specifications

Resolution	1280 × 720
Field of View (FOV)	H45.0° / V72.8° / D80.5°
Lens Angle	16° – 29°
Panel Transmittance	>90% (850nm)
Interface	UART (3.3V TTL, default 115200bps) + USB debug interface
Power Supply	DC 5.0V – 8.4V; Typical working current <200mA@8V; Peak current ≤800mA
Capacity	Face capacity: 1500 users; Palm vein capacity: 500 users; Supports 1:N search
Recognition Performance	Verification time approx. 1 second (1:100 average); False Acceptance Rate (FAR) <0.00001%; False Rejection Rate (FRR) <0.01%
Working Distance	Face recognition: 30cm–120cm (optimal 50cm); Palm vein recognition: 10cm–30cm; Recognition height: 1.2m–2m
Dimensions	40mm × 13mm × 9.31mm
Environmental Adaptability	Operating Temperature: -25°C to +70°C; Operating Humidity: 40%RH–85%RH; Storage Temperature: -40°C to +85°C

Interface and Integration Guide

The hardware interface of the frm3s5 is primarily UART, with core pins including GND, RXD, TXD, and VCC, operating at a 3.3V TTL communication level. For projects requiring rapid connection to main control boards, this interface significantly reduces the complexity of embedded development and is well-suited for standardized integration into access control, attendance, and terminal devices.

It is recommended to power on before initializing the serial port to avoid abnormal startup caused by IO backflow. Since the recognition algorithms and feature library management functions are built-in, project teams typically do not need to set up additional cloud services to complete local identity verification, which is particularly important for privacy-sensitive scenarios.

Frequently Asked Questions

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