EM-18 RFID Reader Module 2.2M ohm the 12 GPIO are intended

the 12 GPIO are intended to handle 20mA current (LED driving capacity)

including Arduino

Working Voltage: 12V

which can be sent from an Arduino

RMS Voltage 70V Maximum Average Forward Rectified Current 1A Max

EM-18 RFID Reader Module 2.2M ohm the 12 GPIO are intendedRadio frequency identification (RFID) technology whereby digital data encoded in RFID tags is captured or identified by a reader via radio waves. EM 18 RFID Reader Module utilizes radio frequency electromagnetic fields to transfer data, For the purposes of automatically identifying and tracking tags attached to objects. The tags contain electronically stored information. This EM 18 RFID Reader is a Tiny, simple to use RFID reader module. Pinout Pin