🔑 Qunqi RC522 RFID RF IC Card Inductive Module: S50 White Card + Key Ring for Arduino - Explore Advanced Contactless Authentication System! Review

The card was an exact replacement for my Hackerbox project. I fried the original by accidentally applying 6 volts to it. This works very well. The card arrived on time and within budget. Many Thanks.

The first machine I bought worked fine for the first 10 uses, but stopped working after that. I bought a second one hoping it was just defective and the second one was scratched and didn't work at all. Please help me get them working or replace them with ones that actually work. Many Thanks.

Product works great! So far, both the card and the strap have worked flawlessly. I appreciate that it comes with both linear and 90 degree contacts.

UPDATE: This was actually my Arduino. The product itself is SUPER! I have another Arduino and it works fine. 5 Stars! I also added a servo to the keg lock (using a paperclip) and now I can put this device on anything and unlock it from the OUTSIDE with an RFID card! It didn't work on my first Arduino, but luckily it did on another one (was a fake called "Funduino")! Basically it would just alert me that it wasn't connected to my first Arduino. It worked on my second Arduino but didn't scan RFID