The 13.56M-49S-SR part of SR Passives is a proximity reader module designed to incorporate the 13.56 MHz frequency RFID technology. It is capable of reading RFID transponders like NFC tags, MIFARE Classic and DESFire products. The module featuresa a high quality surface mounting antenna, making it ideal for tight environments. It is semi-rugged, allowing it to survive in ways harsher than typical office or retail environments. It also features a minimum read range of 13-17 cm, making it suitable for short-range applications. Furthermore, its built-in sampling rate of up to 106 kHz allows for faster communication and higher accuracy. The device also comes equipped with various LED indicators for various errors.