KD-2000 series products and E3, K-2000 (HF), XJ-I, XJ-II Patrol aircraft with the use of integrated circuit chip sealed enclosure, waterproof, shockproof, anti-corrosive, durable, available in various harsh environments. 

 Type: Round Card is mainly used for patrol points. 
 Features 
 1. Non-contact TI-ID cards 
 2. In the rain, snow, ice, dust, and reliable to use under adverse conditions such as 
 3. Patrol point card for the special high sensitivity card, guaranteed credit card in the distance while reducing power consumption Patrol 
 4. Passive card, the use of more than 20 years 
 5. The appearance of patent: ZL 2004 3.7 

 Technical Specifications 
 1, reading times:> 350,000 times 
 2, Life:> 20 years 
 3, ambient temperature: -40 ℃ ~ +85 ℃ 
 4, size: φ80mm × 32mm 
 5, Weight: 30g 
 6, each sensor number is not re-code, without power supply