SLK20M

The ZKTeco SLK20M is a compact embedded optical fingerprint module designed for seamless integration into access control and time attendance systems.
It combines a 2-megapixel CMOS sensor with ARM9 processor for reliable fingerprint capture, including dry, wet, and rough fingerprints with live detection.
Key Specifications
Feature
Specification 
Sensor Type
Optical CMOS, 500 dpi
Image Size
300 × 400 pixels (FAP20 compliant)
Effective Area
15.24 × 20.32 mm
Processor
280MHz DSP / ARM9
Memory
32MB Flash
Fingerprint Capacity
2,000 templates
Communication
UART (115200bps TTL 3.3V) / USB 2.0
Power
5V USB (200mA scanning, 60mA idle)
Liveness Detection
Yes (hardware anti-spoofing)
Finger Rotation
360°
Operating Temperature
-20°C to +50°C (90% RH)
Dimensions
36.2 × 44.2 × 15.85 mm
Weight
32g
Certifications
FCC, CE, RoHS, PIV