GSM-GPRS SIM900 Module tested .

Overview

Unlock the power of cellular connectivity for your projects with the GSM-GPRS SIM900 Module. This compact and reliable module supports quad-band GSM/GPRS (850/900/1800/1900 MHz), making it perfect for SMS communication, data transfer, and remote monitoring applications. Whether you're building a smart home system, a vehicle tracker, or an IoT device, the SIM900 provides a cost-effective and proven solution for adding cellular capabilities to your designs.

Key Features

• Quad-band GSM/GPRS support ensures global compatibility.
• SMS, voice, and data functionality for versatile communication.
• Low power consumption with sleep modes for battery-powered projects.
• UART interface (TTL level) for easy integration with microcontrollers like Arduino and STM32.
• Compact form factor ideal for space-constrained applications.
• Onboard voltage regulator simplifies power supply design (3.1V – 4.2V).
• Status LEDs for network and power indication.

Technical Specifications

• Supply voltage range: 3.1V – 4.2V (typical 3.7V)
• Operating frequency: Quad-band 850/900/1800/1900 MHz
• GPRS data: Downlink up to 85.6 kbps, uplink up to 42.8 kbps
• Interface: UART (TTL), supports AT commands
• SIM card: 1.8V or 3V SIM card supported
• Antenna: SMA connector or onboard pad (check your module variant)
• Operating temperature: -40°C to +85°C

Applications & Use Cases

• SMS-based remote control for home automation, irrigation systems, and security alarms.
• Remote monitoring of environmental data, equipment status, or vehicle location.
• Data logging and transmission to cloud servers via GPRS.
• Two-way communication in robotics or industrial control systems.
• Emergency alert systems that send SMS notifications.

What's Included

• 1x GSM-GPRS SIM900 Module (tested)
• (Note: Antenna, SIM card, and power adapter are not included unless specified otherwise.)

Compatibility

• Works with Arduino, Raspberry Pi, STM32, and any microcontroller with a UART interface.
• Communicates via standard AT commands (e.g., AT+CMGS for SMS).
• Requires a 3.7V-4.2V power supply and a suitable antenna.

MOKWN Recommendation

This tested GSM-GPRS SIM900 Module is an ideal starting point for Egyptian makers and engineers looking to add cellular connectivity to their projects. Its proven reliability and ease of use make it a top choice for IoT prototyping and remote applications. Pair it with an Arduino board and a suitable power supply from MOKWN's wide range to get started today!