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R307 Optical Fingerprint Sensor Module
R307 Optical Fingerprint Sensor Module
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- Suitable for secondary development.
- Can be embedded in various products.
- Interfaces directly with 3.3V or 5V microcontrollers.
- Requires a level converter for PC connections.
- Low-cost, low-power, and compact.
- Advanced optical technology with image resolution up to 500 dpi.
R307 Optical Fingerprint Sensor Module
The R307 Optical Fingerprint Reader makes fingerprint scanning straightforward. It connects easily to microcontrollers or PCs using a TTL UART interface or through a MAX232/USB-Serial adapter. You can store fingerprints on the device and set it to recognize individuals in different ways.
This fingerprint sensor module includes an optical sensor, a fast processor, and smart algorithms for capturing and matching fingerprints. It works with 3.3V or 5V microcontrollers and is great for projects like access control systems, attendance tracking, or secure locks. Itโs small, uses little power, and captures clear fingerprint images with a resolution of up to 500 dpi.
check out: FM220U Finger Print Scanner
R307 Optical Fingerprint Sensor Module Pinout:

Also, check out: Mantra MFS-100 Biometric Finger Print C-Type Scanner
Package Includes:
- 1 xย R307 Optical Fingerprint Sensor Module
Specifications
Operating voltage | 4.2 ~ 6 VDC |
Current consumption | โค75mA |
Verification Speed | 0.2 sec |
Scanning Speed | 0.3 sec |
Character file size | 256 bytes |
Template size | 512 bytes |
Dimensionsย | 3 x 2 x 1cmsย |
Weightย | 25 grams |
Shipping & Returns
Shipping & Returns
- All orders confirmed before 3 pm IST are shipped on the
same day, barring rare pickup delays on holidays or disturbances - Delivery time in Metro cities is 1-3 days, Others it is
3-7 days. It varies based on location, reliant on courier services - Return window: 7 days from receipt unless stated
otherwise. No refunds/replacements after - Returns only for non-working/damaged products are accepted
- Initiate return requests to our customer service team via Support ticket or contact us at +91-8123057137
- Refunds are processed within 3-4 working days post inspection and approval.
For more details, please check our Shipping and Return Policy
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1. How does R307 work?
- The R307 fingerprint module has a TTL UART interface for direct connection to a microcontroller UART or a PC via a MAX232 / USB-Serial adapter. The user can store the fingerprint data in the module and can configure it in 1:1 or 1: N mode for identifying the person.
2. Where is the fingerprint sensor module commonly used?
The fingerprint sensor module is used as a way to verify identity. It is widely applied to computers, mobile phones, electronic door locks, access control systems, security safes, etc.
3. What is the output of fingerprint scanner?
The output of fingerprint sensors is a 2D gray-scale image of a fingerprint, which is then ready for analysis. The image is stored locally, preferably in a secure area of the phone, and in an encrypted form
4. Which interface does the R307 Optical Fingerprint Reader Sensor Module use?
- The R307 Optical Fingerprint Reader Sensor Module is a fingerprint sensor with a TTL UART interface for direct connections to microcontroller UART or to PC through MAX232 / USB-Serial adapter. The user can store the fingerprint data in the module and can configure it in 1:1 or 1: N mode for identifying the person.
R307 Optical Fingerprint Sensor Module
R307 Optical Fingerprint Sensor Module
Excellent product
The fingerprint sensor works flawlessly and provides reliable authentication. It is easy to use and integrates well with my applications.
The sensor module is of high quality and works perfectly with my microcontroller. The fingerprint recognition is fast and accurate, meeting all my project requirements.