SIM800L GSM Module Specifications

General

• Module Type: GSM/GPRS communication module

• Network Bands: Quad-band GSM: 850 / 900 / 1800 / 1900 MHz

• Function: Enables SMS, voice calls, and GPRS data for microcontrollers

Electrical

• Operating Voltage: 3.4 V – 4.4 V DC (recommended 4 V)

• Current Consumption:

  • Idle: ~1 mA – 2 mA

  • Sleep Mode: ~1 mA

  • Peak Transmit Current: 2 A (short bursts)

• Logic Level: 2.8 V – 3.3 V (UART TTL)

Performance

• SMS: Text mode (SMS-TXT) or PDU mode

• Data: GPRS class 10, up to 85.6 kbps

• Voice: Supports voice calls, DTMF, and hands-free functionality

• Antenna: External GSM antenna required

Interface / Pins

• VCC – Power supply

• GND – Ground

• TX / RX – UART communication with MCU

• RST – Reset pin

• STATUS – Network status indicator

• SIM card slot: micro SIM

Physical

• Module Dimensions: ~24 mm × 24 mm × 3 mm

• Weight: ~3–5 g

Applications

• Remote control systems

• IoT devices

• SMS and voice-based alert systems

• GPS tracking (with additional GPS module)

• Microcontroller projects requiring cellular connectivity