Quantity   Component name
1 × NodeMcu ESP8266 V3 - WIFI Internet Development Board Module
1 × SD Card Module Slot Socket Reader For Arduino
1 × 125K EM4100 RFID Card Reader Module RDM6300 Be aware that not 125K is the only frequency for RFID
1 × 0.91'' 128x32 IIC I2C OLED Display Module