USB UHF Reader writer

The USB UHF RFID Reader Writer is a compact UHF RFID device designed for applications that require reliable tag identification, short-range RFID reading, and flexible system integration. Supporting ISO18000-6B and ISO18000-6C (EPC C1G2) RFID tags, the reader operates in the 902–928 MHz frequency range and provides adjustable RF output power up to 30 dBm.

With a built-in antenna, multiple operating modes, and support for RS232 and USB interfaces, this UHF RFID reader can be integrated into computers, industrial equipment, access control systems, inventory solutions, and other RFID-enabled applications. A TCP/IP version is also available for applications that require network connectivity.

FEATURES

• Self-intellectual property;
• Support ISO18000-6B, ISO18000-6C(EPC C1G2) protocol tag;
• 902~928MHz frequency band(frequency customization optional);
• FHSS or Fix Frequency transmission;
• RF output power up to 30dbm(adjustable);
• Built-in antenna with effect distance up to 0-0.5m^*;
• Support auto-running, interactive and trigger-activating work mode;
• Low power dissipation with single +9 DC power supply;
• Support RS232, USB interface;TCP/IP optional
• Effective distance depends on antenna, tag and environment.

CHARACTERISTICS

Absolute Maximum Rating

Electrical and Mechanical Specification

Under T_A＝25℃，VCC＝+9V unless specified

Interface

* Optional model named as UHFReader ZK-RFID 107 with TCP/IP interface is also available.

UHF RFID Technology for Short-Range Identification

UHF RFID uses radio frequency communication to identify compatible RFID tags without requiring direct line-of-sight contact. Compared with manual barcode scanning, RFID can provide a more convenient way to identify tagged objects when the tag is within the reader’s effective operating range.

The USB UHF RFID Reader Writer is particularly suitable for applications where a compact reader and integrated antenna are preferred. Its built-in antenna makes it possible to develop a relatively simple RFID reading point without immediately adding an external antenna system.

The reader supports both ISO18000-6B and ISO18000-6C (EPC C1G2), allowing it to work with different UHF RFID tag types. EPC C1G2 is widely used for item identification, logistics, inventory management, and other RFID applications.

ISO18000-6B and ISO18000-6C Support

Protocol compatibility is one of the most important considerations when selecting an RFID reader. This model supports two UHF RFID standards:

ISO18000-6C, commonly associated with EPC Class 1 Gen 2 technology, is widely used for UHF RFID identification. Before selecting tags, users should confirm that the tag IC and memory configuration meet the requirements of their application.

902–928 MHz UHF Frequency Band

The reader operates in the 902–928 MHz frequency range. This frequency range is commonly used for UHF RFID applications in markets where the corresponding regional regulations permit operation.

The device also supports frequency customization. This can be useful when an RFID solution needs to be adapted to a particular deployment environment or regional frequency requirement.

*The effective distance depends on the antenna, RFID tag, tag characteristics, and surrounding environment.

For commercial deployment, the selected frequency configuration should always be matched to the requirements and regulations of the target market.

Adjustable RF Output Power up to 30 dBm

The reader provides RF output power up to 30 dBm, with adjustable power levels. Adjustable RF power gives system designers greater flexibility when balancing reading performance, operating distance, and the characteristics of a particular RFID installation.

A higher output power does not automatically mean a longer reading distance in every installation. RFID performance also depends on tag sensitivity, antenna characteristics, tag orientation, materials around the tag, electromagnetic conditions, and reader configuration.

For short-range applications, using an appropriate power level can help create a controlled RFID reading zone. This can be especially useful when the system is designed to identify tags at a specific position rather than read tags throughout a large area.

Built-In Antenna for Compact RFID Applications

A built-in antenna is one of the practical characteristics of this RFID reader. Instead of requiring an external antenna as part of the standard configuration, the reader integrates the antenna into the device.

This design can simplify equipment development and installation for applications where the target RFID tags are located relatively close to the reader.

The reference effective distance is up to approximately 0.5 m. Actual performance should be tested with the final RFID tag and installation materials because objects such as metal, liquids, packaging materials, and other RF-sensitive environments can affect UHF RFID performance.

USB and Serial Interface Options

The reader supports RS232 and USB interfaces, providing options for connecting the RFID device to host systems and control equipment. TCP/IP connectivity is also available as an optional model.

The exact communication method and software integration requirements should be confirmed according to the selected model and application.

Three Operating Modes

The reader supports auto-running, interactive, and trigger-activated operating modes. These modes allow the RFID device to be used in different system architectures.

Auto-Running Mode

In auto-running mode, the reader can operate continuously according to the configured application requirements. This type of operation can be useful when RFID tags need to be detected without an external trigger signal.

Interactive Mode

Interactive operation is suitable for applications where the host system needs to communicate with the reader as part of the RFID workflow. It can be useful when the application controls when RFID operations are performed.

Trigger-Activated Mode

The reader supports trigger activation through a TTL-level trigger input. This allows an external control signal to determine when the RFID reader should perform an identification operation.

A trigger-based design can be useful when RFID reading needs to be synchronized with another device, sensor, machine, or process.

Operating and Storage Conditions

Environmental conditions can affect the long-term reliability of electronic RFID equipment. The reader has the following specified temperature ranges:

For installations in factories, warehouses, equipment cabinets, or other industrial environments, the reader should be installed where the actual operating temperature remains within the specified range.

USB UHF RFID Reader vs. External-Antenna UHF Reader

Different RFID installations require different reader designs. A compact reader with a built-in antenna can be advantageous when the RFID reading area is relatively small and controlled.

The USB UHF RFID Reader Writer is therefore a practical choice when the application does not require a large external antenna system.

USB UHF RFID Reader vs. Barcode Scanner

RFID and barcode technologies serve different identification requirements. A UHF RFID reader can identify compatible tags using radio communication, while barcode scanners generally require the barcode to be optically visible to the scanner.

The best technology depends on the workflow. RFID is particularly attractive when automated identification and reduced dependence on visual scanning are important.

Applications for the USB UHF RFID Reader

The compact design and short-range UHF RFID capability make this reader suitable for a variety of identification and automation projects.

Potential applications include:

Inventory Management

RFID tags can be attached to products, assets, containers, or other items. The reader can then be integrated into an inventory system to identify tagged objects.

Access Control

The available Wiegand interface makes the reader suitable for certain access control architectures where RFID identification needs to be connected to an access controller.

Equipment Identification

The reader can be used as an identification point for tagged equipment, tools, components, or assets.

Production and Automation

The trigger input can help synchronize RFID identification with a machine or production process. For example, an external control signal can initiate a reading operation at a defined point in a workflow.

Logistics and Warehousing

UHF RFID is widely used in logistics environments because RFID tags can be identified without the same visual alignment required by barcode systems.

Smart Cabinets and RFID Workstations

The built-in antenna and relatively short effective distance can be useful for controlled reading zones, including RFID workstations, equipment cabinets, and other fixed identification points.

What Affects RFID Reading Distance?

The advertised reading distance should not be treated as a fixed value for every RFID tag and environment. UHF RFID performance is affected by several factors.

The most important variables include:

1. RFID tag design — Different tag ICs and antenna designs have different sensitivity levels.
2. Tag orientation — The angle between the RFID tag and reader antenna can affect coupling and signal strength.
3. Materials — Metal and liquids can significantly influence UHF RFID performance.
4. Reader power — The adjustable RF output affects the available RF energy.
5. Environment — Nearby electronic equipment and RF reflections can influence performance.
6. Antenna characteristics — The antenna determines how RF energy is transmitted and received.

For this reason, the stated 0–0.5 m effective distance is best used as a reference specification. Final performance should be validated with the actual RFID tag, reader configuration, and installation environment.

How to Choose the Right RFID Tag

Choosing a compatible tag is just as important as choosing the reader. The reader supports ISO18000-6B and ISO18000-6C (EPC C1G2), but RFID tags differ considerably in physical construction and RF performance.

When selecting a tag, consider:

• Supported RFID protocol
• Tag IC
• Memory capacity
• Required reading distance
• Tag size
• Adhesive requirements
• Metal or non-metal mounting surface
• Exposure to heat, moisture, or chemicals
• Required read/write operations

For example, a tag designed specifically for mounting on metal may perform differently from a standard paper-label RFID tag. Testing the complete reader-and-tag combination is recommended before volume deployment.

Why Choose a Compact UHF RFID Reader?

A compact reader can reduce the complexity of an RFID installation. When the required reading zone is relatively small, an integrated antenna can eliminate the need to design a separate antenna mounting structure.

This can make the reader suitable for equipment manufacturers, system integrators, automation developers, and RFID solution providers that need to add UHF RFID identification to an existing device.

The combination of adjustable RF output, multiple operating modes, serial and USB connectivity, and an optional TCP/IP model provides flexibility for different system architectures.

Technical Specification Summary

*Effective distance depends on the antenna, RFID tag, and operating environment.

Is This UHF RFID Reader Right for Your Project?

This reader is a good fit when you need a compact UHF RFID solution with an integrated antenna and a relatively controlled reading area. Its support for ISO18000-6B and ISO18000-6C/EPC C1G2 makes it suitable for a range of UHF RFID identification projects.

It is particularly worth considering when your application requires:

• Short-range RFID identification
• A built-in antenna
• USB or RS232 connectivity
• Adjustable RF output power
• Trigger-based RFID operation
• Wiegand integration
• A compact RFID reading point
• Optional TCP/IP connectivity

For applications requiring a much longer reading distance or a large RFID coverage area, a reader with an external antenna configuration may be a better choice.

Frequently Asked Questions

What RFID tags does this reader support?

The reader supports ISO18000-6B and ISO18000-6C (EPC C1G2) UHF RFID tags. Tag compatibility should be confirmed based on the specific tag model and application.

What is the reading distance?

The product specification lists an effective distance of up to approximately 0.5 m. Actual performance depends on the RFID tag, antenna, tag orientation, surrounding materials, and operating environment.

Does the reader have a built-in antenna?

Yes. The product uses a built-in antenna, making it suitable for compact and controlled RFID reading applications.

Does it support USB?

Yes. USB is listed as one of the supported interfaces. RS232 is also supported.

Is TCP/IP available?

A TCP/IP version is available as an optional model. The product page identifies the optional model as UHFReader ZK-RFID 107.

Can the RF output power be adjusted?

Yes. The RF output power is adjustable and can reach up to 30 dBm.

Does it support trigger operation?

Yes. The reader provides a TTL-level trigger input and supports trigger-activated operation.

What power supply does it require?

The specified operating supply range is 8–12 V DC, with +9 V DC listed as the typical operating voltage.

Can it be used for access control?

The interface specification includes Wiegand DATA0 and DATA1 connections, so the reader can be considered for access control systems that use a compatible Wiegand interface. System compatibility should be verified before deployment.

Get Started with UHF RFID Integration

A successful RFID project requires more than selecting a reader. The RFID tag, reader configuration, mounting position, communication interface, operating frequency, and surrounding environment should all be considered together.

The USB UHF RFID Reader Writer provides a compact platform for applications that need short-range UHF RFID identification. With support for ISO18000-6B and EPC C1G2, adjustable RF output power, a built-in antenna, multiple operating modes, and several interface options, it can be integrated into a wide range of RFID equipment and automation projects.

For a new project, we recommend testing the reader with the exact RFID tag and installation environment before finalizing the system design. This is the most reliable way to confirm reading performance, tag orientation, reading distance, and communication requirements.

If you need a compact UHF RFID reader for PC integration, industrial equipment, access control, inventory identification, or automation, this model provides a practical starting point for developing an RFID-enabled solution. Welcome to contact us.