SL030 Mifare Reader & Writer

SL030 is a RFID writer / reader module who works at 13.56MHz frequency.  This product has an I²C interface and includes features automatic tag detection.
Specs:

• Power supply 2.5 - 3.6 VDC
• Detection feature automatically tags
• Dimensions 38 × 38 mm
• Working frequency 13.56MHz
• I²C interface
• Reading distance 0-50 mm
• Tags Format MIFARE Ultralight cards, NTAG203, MIFARE Mini, MIFARE Classic 1K, MIFARE Classic 4K, FM11RF08