sensors

RC522 RFID

The RC522 RFID Reader Module is a compact, low-cost module used to read and write RFID cards and tags wirelessly. It operates at 13.56 MHz and communicates with microcontrollers such as Arduino, ESP32, and STM32 through the SPI interface. Key Features 📡 RFID Frequency: 13.56 MHz 📶 Communication: SPI 💳 Supports: RFID cards, key fobs, and compatible tags 📏 Reading Distance: Typically up to 3–5 cm, depending on the tag and environment ⚡ Operating Voltage: 3.3V 🔐 Applications: Access control, attendance systems, smart locks, identification, and inventory tracking 🤖 Compatible With: Arduino, ESP32, STM32, Raspberry Pi, and other microcontrollers How It Works The RC522 generates an electromagnetic field that powers a nearby passive RFID tag. The tag responds by transmitting its stored identification information back to the reader. The microcontroller receives this data and can use it to perform an action, such as unlocking a door or recording attendance.

• 20 units available