The AS608 Fingerprint Sensor Module captures and stores fingerprint data at 500dpi (dots per inch) resolution. At that resolution, even fine ridge details in a print get recorded cleanly. The optical fingerprint scanner works as a complete system — it handles scanning, processing, and template storage all on one module. A fingerprint sensor like this removes the need for passwords or keys entirely.
The AS608 uses UART (Universal Asynchronous Receiver-Transmitter) or USB to talk to a microcontroller. One detail that surprises many builders: the module stores fingerprint templates internally, so your microcontroller does not need to handle raw image data at all. The trade-off is that wet or very dry fingers reduce matching accuracy, which is worth knowing before deploying it outdoors.
The optical fingerprint sensor pairs with Arduino, ESP32, and Raspberry Pi over UART at 3.3V. Students building access control projects and prototyping attendance systems, and makers working on door locks all use it regularly. Connect TX, RX, and power pins, load a fingerprint library, and enrolment takes under a minute. StemVolt ships this module tested and ready.
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Features:
- Scans at 500dpi resolution which captures fine fingerprint ridge detail accurately.
- Supply voltage of 3.3V keeps power consumption under 60mA during operation.
- UART communication interface allows direct connection to Arduino and ESP32 boards.
- Sensor window of 15.3 x 18.2mm gives a wide enough area for full finger placement.
Technical specifications:
| Specification | Details |
|---|---|
| Product Type | Fingerprint Scanner |
| Resolution | 500dpi |
| Communication Mode | USB/UART |
| Supply Voltage (V) | 3.3V |
| Supply Current (mA) | <60mA |
| Window Area (mm) | 15.3×18.2 |
| Dimension (mm) | 46 x 21 x 24 mm |
Applications:
- A door lock project uses this sensor to open only on a registered fingerprint.
- An attendance system records who arrived and what time using finger scans.
- The Fingerprint Sensor Module controls a locker that unlocks only for authorised users.
- An optical fingerprint scanner reads enrolment data and matches.
Package includes:
- 1 x AS608 Optical Fingerprint Sensor Module
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