SainSmart SIM900 GPRS/GSM Module
Best affordable cellular connectivity solution for intermediate electronics hobbyists.
This shield is the most direct route to giving your projects a cellular heartbeat, handling everything from SMS alerts to remote data logging with ease. While it requires navigating standard AT commands, the trade-off is a rugged, quad-band reliability that works anywhere in the world.
$20.99
Who it's for
- Makers building connected projects with standard development boards
- Engineers designing space-constrained IoT prototypes
- Hobbyists needing multi-functional cellular connectivity for remote hardware
Who should skip it
- Users in countries where 2G infrastructure is no longer supported
- Developers working with limited battery capacity or weak power sources
- Beginners looking for a simple plug-and-play wireless solution
Performance breakdown
Global Connectivity
Quad-band support ensures reliable network access across almost any international region.
Integration Ease
Standard shield form factor makes connecting to Arduino boards incredibly straightforward.
Command Versatility
Industry-standard AT commands provide deep control over all communication functions.
Environmental Durability
Industrial-grade temperature range handles harsh, remote outdoor conditions with ease.
Power Efficiency
Low sleep-mode consumption is ideal for battery-powered, long-term remote deployments.
Voice Capability
Integrated audio jacks allow for basic voice applications without extra hardware.
Key Specs
Quad-Band
850/900/1800/1900 MHz
GPRS Multi-slot Class
10/8
GPRS Mobile Station Class
B
GSM Compliance
Phase 2/2+
Control Interface
AT Commands (GSM 07.07 & 07.05)
Power Consumption
1.5mA (sleep mode)
Operating Temperature
-40°C to +85°C
Dimensions
8.5cm x 5.7cm x 2cm
Connectivity Protocol
GSM, GPRS
Form Factor
Shield
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