SainSmart SIM900 GPRS/GSM Module
Best wireless module for hobbyists building custom cellular communication projects.
This legacy module remains a reliable workhorse for adding cellular connectivity to embedded projects without the complexity of modern hardware. While it lacks the high-speed data capabilities of newer boards, its straightforward AT command interface and voice support make it a dependable choice for simple, low-power remote communication.
$29.99
Who it's for
- Students and hobbyists working on budget-conscious cellular IoT projects
- Developers needing quick access to troubleshooting and integration tutorials
- Engineers requiring basic voice and SMS connectivity in 2G regions
Who should skip it
- Engineers building products for long-term deployment in modern markets
- Developers requiring high-speed data for streaming or large payloads
- Designers creating compact, battery-operated devices with limited power budgets
Performance breakdown
Connectivity Versatility
Quad-band support ensures reliable global network compatibility for most remote projects.
Integration Ease
Standard AT command control simplifies communication for developers familiar with serial protocols.
Power Efficiency
Minimal sleep mode consumption makes it ideal for battery-powered field deployments.
Form Factor
Ultra-compact footprint allows for seamless integration into space-constrained hardware designs.
Data Throughput
GPRS speeds are strictly limited and insufficient for modern high-bandwidth applications.
Environmental Resilience
Wide operating temperature range handles harsh conditions better than standard consumer modules.
Key Specs
Module Dimensions
24 x 24 x 3 mm
Weight
3.4g
Quad-Band Support
850/900/1800/1900 MHz
GPRS Data Rate
Max 85.6 kbps (downlink, Class 10)
Operating Temperature Range
-40°C to +85°C
Supply Voltage Range
3.2V to 4.8V
Low Power Consumption
1.0mA in sleep mode
Supported Protocols
GSM phase 2/2+, embedded TCP/UDP, FTP/HTTP
Form Factor
Compact
Programming Interface
USB-UART
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