13.56MHz RFID Reader Writer Module I2C Interface IC Card RF Sensor Module

http://www.icstation.com/1356mhz-rfid-reader-writer-module-interface-card-sensor-module-p-9175.html

Quite awesome video about RFID Reader Writer Module from elektronik2313: 

Product Introduction:
1.Operating Frequence: 13.56MHz
2.Operating Voltage: 2.5~3.6V
3.Operating Current: 20mA(3.3V power supply)
4.Card Reading Distance: 0~50mm
5.Supporting Type:MIFIRE1 S50 S70 UltraLight Pro
6.Operating Temperature:-25℃～85℃
7.Module Size:2*3cm antenna 3*4cm  coaxial cable length:20cm
8.Connect Type:I2C