Description
A 125kHz RFID (Radio-Frequency Identification) scanner is a device that reads RFID tags operating at a frequency of 125kHz. RFID technology uses radio waves to wirelessly transfer data between an RFID reader (scanner) and an RFID tag. The 125kHz frequency is a common frequency used for low-frequency (LF) RFID systems. Here are key features and details about a 125kHz RFID scanner:
1. **RFID Frequency:**
– Operates at a frequency of 125kHz, which is in the low-frequency range for RFID systems.
2. **Read-Only or Read/Write:**
– RFID scanners can be either read-only or read/write. Read-only scanners can only read data from RFID tags, while read/write scanners can both read and write data to compatible RFID tags.
3. **RFID Tags:**
– Reads data from passive RFID tags that operate at 125kHz. Passive tags do not have their own power source; they are powered by the energy transmitted from the RFID scanner.
4. **Communication Range:**
– The communication range between the RFID scanner and the RFID tag is typically limited to a few centimeters or inches. The exact range depends on the specific scanner and tag used.
5. **Applications:**
– Common applications include access control systems, time and attendance tracking, inventory management, asset tracking, and various other applications where identification and tracking are required.
6. **Interface:**
– RFID scanners often provide output through different interfaces such as RS232, Wiegand, or USB, making it compatible with different systems and devices.
7. **Security:**
– Some RFID systems at 125kHz may have security limitations, as the technology is relatively basic compared to higher-frequency RFID systems. Advanced security features are often implemented at higher frequencies like 13.56MHz.
8. **Antenna Design:**
– The design of the RFID scanner’s antenna can influence its read range and performance. Different antenna designs are used for specific applications.
9. **Power Source:**
– RFID scanners are powered by an external power source, usually through a power adapter or a power-over-Ethernet (PoE) connection.
10. **Integration with Systems:**
– RFID scanners can be integrated into various systems, such as access control systems or inventory management systems. They are often interfaced with microcontrollers or computers for data processing.
11. **Read Speed:**
– The read speed of an RFID scanner at 125kHz depends on factors like the number of tags in the reader’s field and the specific RFID protocol being used.
When selecting a 125kHz RFID scanner, it’s essential to consider factors such as the intended application, compatibility with RFID tags, communication interfaces, and security requirements. Additionally, understanding the specific RFID protocol used and compliance with industry standards is crucial for successful implementation.
