These RFID tags operate at 13.56MHz and are suitable for MOD-RFID1356 and MOD-RFID-1356-BOX. They come in different shapes and have different reading distances. Generally, the bigger the tag is, the bigger reading distance it has. FEATURES: • EM4233 64 bit Read only tag • Operating Temperature -40 °C ~ +85 °C • Relative Humidity 5% to 90% non-condensing • Operating frequency 13.56Mhz