ZKTeco SLK20R USB Fingerprint Scanner

High-precision biometric scanning with live fingerprint detection. The ZKTeco SLK20R is a professional-grade USB fingerprint scanner designed for secure desktop enrolment and verification. Built with advanced optical technology and a 2 MP CMOS sensor, it captures crisp, high-quality fingerprint images — even in bright sunlight or with dry, wet, or rough skin types. Perfect for access control, time attendance, or software integration projects, the SLK20R delivers both accuracy and affordability.

Why choose the ZKTeco SLK20R

• Superior fingerprint quality: 2 Megapixel CMOS sensor delivers clear, detailed fingerprint images with 500–1000 dpi resolution.
• Live detection capability: Built-in anti-spoofing detection recognizes live skin to prevent fake or copied fingerprint attempts.
• Reliable under all conditions: Performs well with dry, wet, or rough fingers and continues operating stably under strong lighting.
• Plug-and-play USB connection: Easy setup through USB 2.0 / 1.1 with low power consumption — 200 mA during scanning, 60 mA idle.
• Compact, durable design: Slim 49 × 44 × 20 mm housing with splash resistance, CE/FCC/RoHS certification, and 0.12 kg weight for easy portability.
• Developer-friendly SDK: Available SDK enables seamless integration with custom software or security systems.

Technical Specifications

Model	SLK20R
Sensor Type	Optical
CPU	280 MHz DSP
Memory	32 MB Flash
Operating System	RTOS (image out only)
Image Resolution	500 – 1000 dpi
Image Sensor	2 Megapixel CMOS
Image Size	300 × 400 pixels (FAP20)
Effective Collecting Area	15.24 × 20.32 mm (FAP20)
Total Capture Area	16.5 × 23 mm
Image Format	RAW, BMP, JPG
Template Formats	ZKFinger V10.0, ISO 19794-2, ANSI-378
Template Size	1–4 KB (ZKFinger V10.0); 1568 B (ISO 19794-2)
Communication Interface	USB 2.0 / 1.1 (Type A)
Power Voltage	5 V (USB powered)
Current Consumption	200 mA (scanning) / 60 mA (idle)
LED Indicator	White LED
Certifications	FCC, CE, RoHS, PIV
Operating Temperature	-20 °C to +50 °C
Operating Humidity	≤ 90% RH
Weight	0.12 kg

Ideal for

• Government and corporate access control systems needing accurate, tamper-resistant enrolment.
• Attendance software where consistent, quick recognition of fingerprints is required daily.
• Custom software integration through the available SDK for developers building secure ID or verification solutions.

Usage and care tips

• Connect via USB 2.0 and install ZKTeco’s SDK or driver (if required by your application).
• Keep the optical sensor clean using a soft lens cloth for best image quality.
• Avoid direct contact with water or heavy dust despite its splash resistance.
• Operate within the recommended temperature range for long-term stability.

Experience fast, secure and accurate fingerprint capture with the ZKTeco SLK20R. Compact, reliable and developer-friendly, it’s the perfect biometric device for security professionals, businesses, and software integrators across South Africa.