GROW K236-A Fingerprint Control Board
GROW K236-A Fingerprint Control Board
GROW K236-A Fingerprint Control Board
The GROW K236-A Fingerprint Control Board is a sophisticated biometric access control module designed for secure door lock systems and attendance management applications. Security professionals, system integrators, and facility managers use this board to implement fingerprint-based authentication in residential, commercial, and industrial environments. This product solves the critical challenge of providing tamper-proof, non-transferable access control by eliminating the need for physical keys or cards that can be lost, duplicated, or stolen.
Product Overview
The GROW K236-A operates on advanced capacitive fingerprint sensing technology combined with a dedicated microcontroller that processes biometric data in real-time. The board integrates a high-resolution fingerprint sensor capable of capturing 500 DPI images with automatic image enhancement algorithms. It features built-in template matching algorithms that compare live fingerprints against stored templates with false rejection rates below 0.1% and false acceptance rates below 0.01%, ensuring reliable authentication even in challenging environmental conditions. The board communicates via industry-standard Wiegand protocol or RS485 serial interface, making integration seamless with existing access control systems and smart lock mechanisms.
What distinguishes the K236-A is its robust processing capability housed in a compact form factor with industrial-grade components rated for extended temperature ranges from 0°C to 50°C. The board supports enrollment of up to 3000 fingerprint templates with fast matching speeds under 500 milliseconds. It includes dedicated relay outputs for lock control circuits and status feedback inputs for door sensors. The onboard power management circuit provides stable operation across 12V DC input with current draw under 200mA during normal operation, making it suitable for battery-backed systems. Built-in surge protection and EMI filtering ensure reliability in electrically noisy industrial environments.
Key Specifications
| Specification | Details |
| Product Type | Fingerprint Biometric Control Board |
| Brand | GROW |
| Model | K236-A |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
| Fingerprint Sensor Resolution | 500 DPI capacitive sensor |
| Template Storage Capacity | Up to 3000 fingerprint templates |
| Matching Speed | Less than 500 milliseconds |
| False Rejection Rate | Below 0.1% |
| False Acceptance Rate | Below 0.01% |
| Operating Temperature | 0°C to 50°C |
| Power Supply | 12V DC, 200mA typical |
| Communication Interface | Wiegand or RS485 serial |
| Relay Output | Single relay for lock control |
| Dimensions | Compact industrial form factor |
Key Features
- High-Resolution Fingerprint Sensor: 500 DPI capacitive technology with automatic image enhancement for reliable capture in various lighting and moisture conditions
- Large Template Database: Supports enrollment and storage of up to 3000 unique fingerprint templates with rapid matching algorithms under 500ms
- Industrial-Grade Reliability: Operates across extended temperature range 0°C to 50°C with surge protection and EMI filtering for harsh environments
- Dual Communication Protocol: Flexible Wiegand or RS485 serial interface for seamless integration with existing access control systems and smart lock platforms
- Integrated Relay Control: Built-in relay output for direct lock mechanism control with status feedback inputs for door sensor integration
- Low False Acceptance Rate: Advanced template matching with less than 0.01% FAR ensures secure authentication and prevents unauthorized access
- Power-Efficient Design: Optimized current draw of 200mA typical at 12V DC, suitable for battery-backed and solar-powered installations
- Compact Industrial Packaging: Space-efficient design for integration into door frames, access panels, and control enclosures
Applications and Use Cases
- Residential Smart Door Locks: Integration into apartment entrance systems and villa security gates for keyless biometric access with audit trails of entry attempts
- Corporate Office Access Control: Implementation in employee attendance systems and restricted area door locks for secure facility management and time tracking
- Bank and Financial Institutions: High-security vault and safe deposit locker systems requiring multi-factor authentication with tamper-proof biometric verification
- Industrial Manufacturing Plants: Machine access control and equipment authorization systems preventing unauthorized operation in hazardous production environments
- Healthcare Facilities: Controlled access to pharmacy, laboratory, and patient record storage areas with automatic logging of personnel access for compliance auditing
- Data Centers and Server Rooms: Biometric-based entry systems for sensitive infrastructure protection with real-time access monitoring and incident reporting
How to Use
Begin by mounting the GROW K236-A fingerprint control board in your access control enclosure or door frame assembly, ensuring the sensor window faces outward for user interaction. Connect the 12V DC power supply to the designated power input terminals, ensuring proper polarity to avoid component damage. Establish communication between the board and your host controller or smart lock system using either Wiegand protocol or RS485 serial connection as per your system architecture. Configure the board's operating parameters through the designated programming interface, setting security levels, timeout durations, and relay activation patterns according to your access control requirements.
During initial setup, enroll authorized users by capturing their fingerprints through the sensor interface. The board will automatically process and store the biometric template in its internal memory. For each enrollment, guide users to place their finger on the sensor surface with consistent pressure and angle for optimal template quality. Once enrollment is complete, test the authentication process by having users attempt to unlock the system with their enrolled fingerprints. Monitor the relay output to confirm proper lock mechanism activation. Configure backup access methods and emergency override procedures according to your security policy. Regularly verify system logs and access records to ensure proper functioning and detect any unauthorized access attempts or system anomalies.
Frequently Asked Questions
What is the maximum number of fingerprints that can be stored in the K236-A board?
The GROW K236-A supports storage of up to 3000 unique fingerprint templates. Each template requires approximately 512 bytes of memory, allowing large-scale deployment in multi-user access control systems. When the template database reaches capacity, you can selectively delete unused templates or upgrade to a higher-capacity variant to accommodate additional users.
How fast does the K236-A board authenticate a fingerprint?
The fingerprint matching process completes in less than 500 milliseconds from the moment a user places their finger on the sensor. This rapid response time ensures smooth user experience without noticeable delays during access attempts. The matching speed remains consistent regardless of database size, thanks to optimized algorithm implementation in the onboard microcontroller.
Can the K236-A integrate with existing Wiegand-based access control systems?
Yes, the K236-A features a dedicated Wiegand output interface compatible with standard access control readers and controllers. It transmits matched fingerprint IDs in 26-bit or 34-bit Wiegand format, allowing direct integration into legacy systems without requiring additional interface converters. This makes it ideal for retrofitting existing access control infrastructure with biometric capabilities.
What is the power consumption of the K236-A board during normal operation?
The board draws approximately 200mA at 12V DC during normal operation, consuming about 2.4 watts. This low power consumption makes it suitable for battery-backed systems and solar-powered installations. During standby mode with the sensor inactive, current draw reduces further, extending battery life in off-grid applications.
Is the K236-A suitable for outdoor installations?
The K236-A is rated for operating temperatures from 0°C to 50°C, making it suitable for most indoor and covered outdoor environments. However, for direct outdoor exposure to rain, dust, or extreme temperatures, we recommend housing the board in a weatherproof enclosure with proper ventilation. The board includes surge protection and EMI filtering for industrial environments, but additional protection may be needed for harsh coastal or tropical conditions.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.
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- Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
- Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
- Payment Options: COD, UPI, credit/debit cards, net banking, EMI available
- Technical Support: 24/7 expert guidance via email and WhatsApp
- Returns: 7-day return policy on manufacturing defects only
Buy GROW K236-A Fingerprint Control Board Online in India
Purchase the GROW K236-A Fingerprint Control Board online at The Tech Depot, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on GROW K236-A Fingerprint Control Board with fast shipping and expert support.
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