SFM4000 Series
SFM4000 is a compact, power efficient module that is simple to integrate with various system applications. The module offers flexible supply voltage, integrated power management, small footprint, and voltage detector functions. SFM4000 is specially designed for lock and safe manufacturers look for an inexpensive, reliable biometric solution with extra low power-consumption and compact size.


  • Integrated power control circuit
  • Suprema, ISO 19794-2 and ANSI 378 template options
  • Serial Interface with simple protocol
  • 4 configurable Digital I/O ports
  • Single 3.3 VDC regulated power source
  • 256-bit AES fingerprint data encryption

Available Models


  • Optical Sensor
  • Robust optical fingerprint sensor
  • Solid and scratch-free sensor surface
  • Reliable high quality fingerprint image for wet & dry fingers
  • Sensor surface optimized to capture the ideal fingerprint image


Sensor Option Optical
Flash Memory 1 MB
EER < 0.1%
Enrollment Time
(Sensor Dependent)
< 800ms OP5
1:1 Verification Time
(Sensor Dependent)
< 800ms OP5
1:1000 ID Time*
(Sensor Dependent)
< 970ms OP5
Template Options Suprema, ISO19794-2, ANSI-378
Template Size
(Default: 384 Bytes)
Default: 384 Bytes
256 - 384 Bytes (Configurable)
Template Capacity 1,900 @ 1MB Flash
Host Comm. Asynchronous serial: CMOS level (3.3V) (up to 460800 bps)
External I/O 4x Digital I/O
Fingerprint Data
256-bit AES
Supply Voltage 3.3 VDC Regulated
Operating Temp (°C) -15 to 50 °C
Board Size
(L x W x H) (mm)
26 x 26 x 6.4
Model SFM4020-OP5
Sensor Type Optical
Sensor Options OP5
Resolution (dpi) 500
Sensing Area (mm) 16.0 x 19.0
Image Size (px) 272 x 320
Finger Rotation +/- 90'
Sensor Dimension
(L x W x H) (mm)
20.5 x 25 x 52

*Average genuine identification time including feature extraction


  • SFM4020-OP

  • Housing Set

  • Housing

  • Bracket


  • Access Control

  • Time and Attendance

  • Door Lock

  • Safe

  • Mobile POS

  • Vending Machine

  • IoT

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