Module NFC RFID MFRC-522 Reader/Writer Module, RFID Radio Frequency Module, IC Card Sensing Module

Operating Voltage: 3.3V-5V Interface Type: PH2.0 4P Terminal Port Mounting Method: Screw/Modular Fixing Hole Spacing: 32mm Hole Diameter: 4.7mm/3.2mm Module Dimensions: 39mm*55mm Interface GND connects to the negative power supply, VCC connects to the positive power supply, SDA is the data line for I2C communication, and SCL is the clock line for I2C communication. Color: As Shown Material: PCB Package Contents: 1*set NFC RFID Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.