Grow KL202+R503 DC12V Low Power Consumption Ring Fingerprint Access Control Board
Grow KL202+R503 DC12V Low Power Consumption Ring Fingerprint Access Control Board - Image 2
SKU: SENS-0573
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Grow KL202+R503 DC12V Low Power Consumption Ring Fingerprint Access Control Board

₹3,059.00 (Inclusive of all taxes)
Out of Stock

The Grow KL202+R503 is a standalone fingerprint access control board featuring an integrated R503 optical fingerprint sensor and an STM8 microcontroller. It operates on a wide 10-24V DC supply, supports 120 fingerprint templates, and provides a configurable 10A relay output for direct door lock control.

Features

  • Integrated R503 optical fingerprint sensor with 120-user capacity
  • Onboard STM8 microcontroller for standalone operation
  • Configurable 10A relay output with 0.5-13 second activation timer
  • Wide operating voltage range of 10-24V DC
  • Ultra-low standby current of 15µA for power-efficient applications

Out of stock

Description

The KL202+R503 access control board combines a high-performance optical fingerprint sensor with a dedicated control system. The onboard STM8 microcontroller manages fingerprint enrollment, template matching (1:1 or 1:N), and relay activation, enabling standalone operation without an external host computer.

Designed for low-power operation, the module draws minimal current in standby mode, making it suitable for battery-backed or energy-conscious access systems. The integrated multiturn potentiometer allows precise adjustment of the relay activation duration, providing flexibility for various locking mechanisms.

Key Features

  • All-in-one fingerprint access control solution with integrated sensor and controller
  • High-speed fingerprint scanning (<0.2s) and verification (<0.3s)
  • Low false acceptance rate (FAR ≤0.001%) and false rejection rate (FRR ≤1%)
  • Wide operating temperature range from -25°C to +60°C
  • Compact board design with direct relay output for door lock integration
  • Simple fingerprint enrollment via tactile SET button and LED indicators
  • Robust construction suitable for indoor access control environments

Applications

  • Standalone door access control for offices, storage rooms, and residential gates
  • Time & attendance systems with biometric verification
  • Secure cabinet or locker access with fingerprint authentication
  • Integration into DIY smart home security and automation projects
  • Low-power battery-operated access points in remote locations

Technical Specifications

Model NumberKL202+R503
ProcessorSTM8 Microcontroller
Operating Voltage10 - 24V DC
Standby Current15 µA
Output TypeRelay (Max 10A)
Relay Activation Timer0.5 - 13 seconds (adjustable)
Fingerprint Capacity120 templates
Scanning Speed< 0.2 seconds
Verification Speed< 0.3 seconds
Matching Method1:1 or 1:N
False Acceptance Rate (FAR)≤ 0.001%
False Rejection Rate (FRR)≤ 1%
Operating Temperature-25°C to +60°C
Operating Humidity10% to 85% RH

Frequently Asked Questions

What is the operating voltage range for the KL202+R503 board?

The board operates on a wide DC voltage range from 10V to 24V. This flexibility allows it to be powered by common 12V DC adapters or battery packs, making it suitable for various installation environments. Ensure your power supply can deliver sufficient current for the relay load.

How many fingerprints can be stored on the module?

The module has a capacity of 120 fingerprint templates. Enrollment is performed directly on the board using the SET button and LED feedback. The system supports both 1:1 (specific user verification) and 1:N (search all stored templates) matching modes for access control.

How do I adjust the relay activation time?

The relay activation duration is adjustable from 0.5 seconds to 13 seconds via the onboard multiturn potentiometer. Turn the potentiometer with a small screwdriver to set the desired lock/unlock pulse width. The relay is rated for a maximum load of 10A, suitable for most electric door strikes or magnetic locks.

What is the power consumption in standby mode?

The module features ultra-low power consumption, drawing only 15 microamperes (µA) in standby mode. This makes it ideal for systems with battery backup or solar power. During active scanning or relay activation, current draw will increase temporarily based on the connected load.

Package Includes

  • 1 x Grow KL202+R503 Fingerprint Access Control Board

Additional Information

Weight 0.08 kg
Dimensions 4 × 5 × 2 cm

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