SkyeTech SkyeModule M9 Size - 70x53x9 mm Frequency MHz Supply Voltage – 5 V Price - $80 Connection Type - TTL, USB, SPI & I2C

SkyeTech SkyeModule M10 Size x76.5x11.2 mm Frequency MHz Supply Voltage V Price - $ 497 Connection Type - usb, RS232 cable

ThinkMagic ( Model -- M6e ) Size - 69 x 43 x 7.5 mm Frequency MHz Supply Voltage – 5 V Price – Inquired $500 for Module alone, $1500 for dev kit Connection Type – Serial, USB

ThinkMagic ( Model - M5e-Compact ) Size - 56 x 36 x 5 mm Frequency MHz Supply Voltage – 3.3 V Price – $300 for Module alone; $1500 for dev kit Connection Type – Serial

TI ( Model – TRF7970A ) Size - 5 x 5 x 5 mm Frequency MHz Supply Voltage – 2.7 – 5.5 V Price – $ Connection Type – USB

VEEYEE ( MODEL – 399X ) Size – 90 X 49 X 0.51 mm Frequency MHz Supply Voltage – 3.3 – 5.5 V Price – $172 ( + $21 Shipping ) Connection Type – UART

IDRO RFID ( MODEL – IDRO900MA ) Size – 33.0 x 39.0 x 7.5mm Frequency MHz Supply Voltage – 3.7 – 4.2 V Price – $200 - $300 Connection Type – UART

IDS ( IC ) ( MODEL – R903 ) Size – 7.0 x 7.0 x 0.9mm Frequency MHz Supply Voltage – 3.0 – 3.6 V Price – $35 Connection Type – UART

CXJ-OEM ( MODEL – CXJ-ZN-RR0017 ) Size – 210 X 90 X 53 mm Frequency MHz Supply Voltage – V Price – $ $500 Connection Type – NOT SPECIFIED

GAO RFID Size – 70 X 53 X 9 mm Frequency MHz Supply Voltage – 4.5 – 5.5 V Price – NOT SPECIFIED Connection Type – USB