Everything works fine, unlike some others I had bought (in gray color) and I thought I had done something wrong...

Very good purchase

This particular product came to complement the number of cards we had in the apartment building for the residents. After three years of operation, they continue to respond positively and open the front door smoothly. The frequent transfer of them to the keychain, among metallic keys, has significantly worn out their outer casing, but they all still work. We proceeded to purchase new TAG/RFID and replaced those that had come off the metallic keychain. We are very satisfied with the performance of the product.