100 Pack S50 RFID Proximity Cards

Each card measures 85.5 x 54 x 0.84 mm and is made of durable white PVC material. Equipped with the NXP MF1S50 chip, these cards operate at 13.56 MHz and comply with ISO14443A protocol. They offer 1 KB total storage capacity, structured across 16 sectors — each with two independent password-protected blocks — enabling flexible data segmentation for multi-application use. Typical read range is 8–10 cm under standard reader conditions. Data retention lasts up to 10 years, and card endurance exceeds 100,000 read/write cycles. Common applications include access control, employee attendance, security patrol systems, public transport (bus card), highway toll collection, and custom business card solutions.