SIM900A_GSM_MODEM Sim900A Gsm Modem Module with Sma Antenna AB0293

Features

• Operates at 13.56MHz RFID frequency.
• Supports reading and writing RFID cards and tags.
• SPI communication interface for fast data transfer.
• Compatible with Arduino Uno, Mega, Nano, ESP8266, ESP32, Raspberry Pi, and other development boards.
• Includes both RFID card and RFID keychain tag for immediate testing.
• Low power consumption and stable performance.
• Ideal for security, authentication, and attendance projects.
• Easy to install using included straight and right-angle header strips.

Specifications

• Module: MFRC522 RFID Reader/Writer
• Operating Frequency: 13.56MHz
• Communication Interface: SPI
• Operating Voltage: 3.3V DC
• Reading Distance: Up to 3–6 cm (depending on tag and environment)
• Protocol Support: ISO/IEC 14443 Type A
• Compact PCB design for embedded applications

Package Includes

• 1 × RC522 RFID Reader/Writer Module
• 1 × Standard Blank RFID Card
• 1 × RFID Keychain Tag (Special Shape)
• 1 × Straight Header Strip
• 1 × Right-Angle Header Strip

Applications

• RFID Door Lock Systems
• Attendance Management Systems
• Access Control Projects
• Smart Identification Systems
• Inventory Tracking
• Security and Authentication Projects
• Arduino and IoT Learning Projects
• Automation and Embedded System Development