SIM800L GPRS GSM Module Micro SIM Card Core Board

SIM800L GPRS GSM Module Micro SIM Card Core BoardThe SIM800L GPRS GSM Module Micro SIM Card Core Board represents a compact and highly versatile cellular communication solution designed for seamless integration into Internet of Things (IoT) projects. Furthermore, this module enables microcontrollers to transmit data over GPRS, send and receive SMS messages, and facilitate voice calls via a simple Serial UART interface. Consequently, it serves as a primary choice for remote monitoring and telemetry applications where traditional Wi-Fi or Bluetooth connectivity is unavailable. Therefore, developers can easily deploy global communication capabilities in their designs using its quad-band support. However, users must provide a stable 3.4V to 4.4V power source capable of handling high current spikes during network transmission. Specifically, the board features a micro SIM card slot and an IPX antenna connector, ensuring a minimal footprint while maintaining excellent signal reception. Moreover, the active serial communication allows for rapid prototyping and deployment across various platforms.

Key Features

• Quad-Band Support: Operates on 850/900/1800/1900MHz frequencies for global network compatibility.
• Serial UART Interface: Simplifies the connection process to Arduino, Raspberry Pi, and other microcontrollers using standard TTL logic.
• Micro SIM Slot: Includes a built-in flip-top socket for standard micro SIM cards to reduce external component requirements.
• LED Status Indicators: Features onboard LEDs to display real-time network search and registration status.
• Compact Core Board Design: Minimizes PCB space requirements, consequently making it ideal for portable or embedded devices.
• Antenna Options: Supports both spring antennas and external antennas via the integrated IPX/U.FL connector.

Technical Specifications

• Operating Voltage Range: 3.4V DC to 4.4V DC (4.0V recommended for stability).
• Peak Current Consumption: ≈ 2.0A during burst transmissions, therefore requiring a high-current power supply.
• GPRS Multi-slot Class: Class 12/10 capability.
• Operating Temperature: −40°C to +85°C for industrial environments.
• Communication Protocol: Standard AT commands (3GPP TS 27.007, 27.005 and SIMCom enhanced AT Commands).
• Data Rate: Supports GPRS download speeds up to 85.6 kbps.

Mechanical Specifications

• Antenna Connector: IPX/U.FL miniature RF connector for flexible signal routing.
• PCB Finish: High-quality black solder mask with gold-plated pads to ensure superior conductivity.
• Mounting Orientation: Supports horizontal surface mount or through-hole header pin installation.
• Card Slot Type: Push-pull or flip-top Micro SIM socket depending on the specific batch.

Dimensions

• Overall Board Size: ≈ 25.0 mm × 23.0 mm (L x W).
• Component Height: ≈ 8.0 mm (Including the SIM slot).

Pinout and Wiring

• VCC: Power input (3.4V − 4.4V DC).
• GND: Common system ground.
• TXD: Serial data output (Transmit to microcontroller).
• RXD: Serial data input (Receive from microcontroller).
• RST: Hardware reset pin (Active low).
• DTR: Data Terminal Ready pin for sleep mode control.
• RING: Indicator for incoming calls or SMS messages.

Datasheet Reference: Download Datasheet

• • SIM800L Hardware Design Manual

Commonly Used in

• Remote Sensing and Telemetry
• Asset Tracking Systems
• DIY Cellular Security Gateways
• IoT Data Loggers
• Smart Agriculture Monitoring

Applications

• Engineers integrate this module into real-time GPS trackers to relay location data over cellular networks.
• It provides a reliable SMS alert gateway for industrial monitoring systems that require instant notifications.
• Consequently, it powers remote weather stations by uploading sensor data to cloud servers via GPRS.
• Furthermore, designers utilize the voice capability for emergency call boxes in isolated locations.
• Ultimately, it serves as the cellular interface for automated vending machines to report stock levels wirelessly.

Equivalent Models

• SIM900L Module: An older version with similar AT command compatibility.
• A6 GSM Module: A comparable low-cost quad-band module with a similar footprint.
• SIM800C Module: A slightly smaller variant offering Bluetooth capabilities in certain versions.

Package Includes

• 1 x SIM800L GPRS GSM Module Micro SIM Card Core Board
• 1 x 8-Pin Male Header Set