As mentioned in our Aug. 22nd post about selecting the appropriate RFID frequency for your application, today I’m providing the first in a three part series that takes a closer look at a few of the different RFID frequencies. Today we’re taking a closer look at Low Frequency (LF) Passive RFID. 125-134 KHZ LF RFID (passive) has the following characteristics:
- Read range: from approximately 1 inch to 1.5 ft.
- Reads one tag at a time
- Limited memory: 96 to 2,000 bits
- Penetrates most materials well, including water and metal
- Easily embedded in non-metallic items
- May be affected by electrical noise in an industrial environment
Typical LF RFID applications:
- Access control-such as contactless tags that are read to enter/exit parking lots or buildings
- Customer IDs via key fobs
- Animal tracking
- Legacy asset tracking
Check back tomorrow for part 2 when I take a closer look at High Frequency (HF) RFID.