Features of chips: (125KHz LF/ 13.56MHz HF/
1. Low frequency: 1-5 cm, with small memory, widely applied in animal tracking, parking system, etc.
2. High frequency: 2-10 cm, with big memory, is widely applied in various fields.
3. Ultra high frequency: 1-10 m, the most sensitive, easy to be affected by humidity, dust, temperature, etc
Festival, event, vocal concert, party, campaign, entrance ticket, etc