With the development of the smart card industry, radio frequency card technology is also becoming more and more mature, peoples demand for card entry and exit, from the original need to pull out the card from the pocket to sense the development of the current era of automatic induction without pulling out the card. As long as you carry a long-distance induction card with you, the card can be placed in your pocket or bag at will, and you can enter and exit the gate freely.

the M1 card is divided into the S50 and S70, the S70 being an upgraded version of the S50. Lets take a look at the parameters of the S50 and S70 in comparison.
S50 card system parameters.
Storage capacity: 1K Bytes
Operating frequency: 13.56 MHz
Communication rate: 106Kbps
Read/write distance: 0 to 100mm
Read and write time: 1 to 5ms
Operating temperature: -20°C to +55°C
Erase life: >100,000 times
Data retention: >10 years
Dimensions: ISO standard card 85.6x54x0.82
Material: PVC, PET, PETG, 0.13mm copper wire
Encapsulation process: Ultrasonic automatic wire implantation / automatic touch soldering
Standard: ISO14443A
Available sizes: 85.6 x 54, 83 x 20, 70 x 40, 50 x 50, 45 x 45, 45 x 28, 44 x 20, 38 x 38, 35 x 30
S70 card system parameters.
Storage capacity: 4K Bytes
Operating frequency: 13.56 MHz
Communication rate: 106Kbps
Read/write distance: 0 to 120mm
Read and write time: 1 to 5ms
Operating temperature: -20°C to +55°C
Erase life: >100,000 times
Data retention: >10 years
Dimension: ISO standard card 85.6x54x0.82
Encapsulation material: PVC, PET, PETG, 0.13mm copper wire
Encapsulation process: Ultrasonic automatic wire implantation / automatic touch soldering
Standard: ISO14443A
Available sizes: 85.6 x 54, 83 x 20, 70 x 40, 50 x 50, 45 x 45, 45 x 28, 44 x 20, 38 x 38, 35 x 30
the S70 has a long sensing distance, a high degree of safety and a large storage capacity.
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