The EM18 RFID Reader Module simillar to the ID models (the difference being no silicone protection on the back). If you need an inexpensive way to get started with RFID, this is a great little module. Just power the module, and it will read any RFID card within range. It will output the cards ID in a serial string, which can easily be read by any microcontroller. The spacing on the pins is 2.54 mm, which means the module will directly fit on a breadboard. Applications: Security & Surveillance Smart Home System Automotive Domain Industrial Domain Package includes : 1 x EM18 RFID Reader Module