Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Sensor Type	Capacitive Semiconductor
Resolution	508 DPI
Interface	UART / USB
Operating Voltage	3.3V DC
Fingerprint Capacity	Up to 150 Templates
Matching Speed	< 0.5 Seconds
False Acceptance Rate	< 0.001%
False Rejection Rate	< 1.0%
Operating Temperature	-20°C to 60°C
Dimensions	14mm x 18mm x 2.5mm

6 reviews

Anonymous

Mar 30, 2026

Rating: 5/5

Perfect for DIY Security Projects

This module integrated seamlessly with my ESP32 project. The documentation was clear, and the recognition speed is impressively fast. Highly recommended for hobbyists.

Anonymous

Mar 23, 2026

Rating: 4/5

Good value but needs careful wiring

The sensor works well once connected properly. Make sure your logic levels match, as it runs on 3.3V. Once set up, the accuracy is quite good for the price point.

Anonymous

Mar 23, 2026

Rating: 5/5

Reliable and Compact

I used this for a custom door lock prototype. The small form factor made it easy to hide inside the casing. It hasn't failed a single read in two weeks of testing.

Anonymous

Mar 13, 2026

Rating: 4/5

Solid performance

The UART communication is straightforward. I appreciated the low power consumption. The only downside is that the included cable is a bit short for some setups.

Anonymous

Mar 10, 2026

Rating: 3/5

Works but steep learning curve

The hardware is fine, but if you are new to embedded systems, be prepared to dig into the datasheet. It's not plug-and-play without some coding knowledge.

Anonymous

Mar 01, 2026

Rating: 5/5

Exceeded expectations

For a capacitive sensor at this price, the false rejection rate is very low. It even works reasonably well with slightly dry fingers after adjusting the sensitivity settings.

5 FAQ

Q: Can this sensor work through glass?

A: No, this is a capacitive sensor and requires direct skin contact. It will not function if covered by glass or thick plastic.

Q: Does this module support USB direct connection to a PC?

A: Yes, the HLK-ZW101 supports both UART and USB interfaces. You can connect it directly to a PC via USB for configuration and testing.

Q: What is the maximum number of fingerprints I can store?

A: The module can store up to 150 fingerprint templates in its internal memory.

Q: Is there an SDK available for Arduino?

A: Yes, we provide a library compatible with Arduino IDE. You can download it from our official GitHub repository linked in the product manual.

Q: What happens if power is lost? Are fingerprints saved?

A: Yes, the stored fingerprint templates are saved in non-volatile memory, so they will remain intact even if the power is disconnected.

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