Active electronic tag: the active electronic tag is equipped with a battery, and its power supply comes from the internal battery. After the RF signal and data sent by the reader are processed by the integrated CPU circuit, the carrier signal or reverse carrier signal of the corresponding frequency is sent to the reader through the antenna. Active electronic tags have the characteristics of reading and writing, can store a large amount of information and have a long service life.

Passive electronic tag: there is no battery in the passive electronic tag, and the energy needed for its work comes from the RF signal sent by the reader. When the passive electronic tag enters the working range of the reader, it will receive the RF signal sent by the reader, use part of the energy to activate the circuit in the tag, and send the data stored in the tag through induced current. Passive electronic tags have lower cost and longer service life, but smaller storage capacity.

In addition, according to the functions and application scenarios of electronic tags, they can also be divided into ID tags and multifunctional tags.

ID tag: ID tag usually contains only a unique ID number, which is used to identify and track items. This kind of tag usually adopts passive electronic tag, which has long reading distance and long service life.

Multi-function tag: Besides the unique ID number, multi-function tag can also store other information, such as item name, production date, price, etc. This kind of tag usually adopts active electronic tag, which has large storage capacity and read-write function.

In short, low-frequency RFID electronic tags can be divided into active and passive, ID tags and multi-functional tags according to different application requirements and functions. Different types of electronic tags have different characteristics and application scenarios.