SIM900A GSM Module
$35.001 pcs
High integration, broad compatibility, extremely low power consumption, and strong stability
| Dimensions | 50 × 49 mm |
|---|---|
| Brand |
easyelecmodule |
5341 in stock
Product Introduction
1. Key Features
1.All-in-one functionality: Eliminates the need for separate voice modules or SMS modules—one module covers all 2G + GPRS functions.
2.Wide compatibility: Supports mainstream global 2G frequency bands; works directly with China Mobile/China Unicom 2G SIM cards, and maintains stable connectivity even in remote areas.
3.Ultra-low power consumption: Only 2 mA in sleep mode and <18 mA in standby mode—battery-powered devices can run continuously for over 6 months.
4.Industrial-grade stability: Operates in a temperature range of -40°C to 85°C, reliable even in harsh environments like high-temperature greenhouses or low-temperature outdoor areas.
5.Easy to use: Supports UART interface; can connect directly to Arduino/STM32/Raspberry Pi, with simple AT commands for easy debugging.
2.SIM900A Application Scenarios: Why Choose It?
| Scenario Requirement | Separate Module Solution | SIM900A Single-Module Solution |
|---|---|---|
| Remote device “call + data” dual control | 2G voice module + independent data module (high cost) | One module for both calls and data transmission |
| Environmental monitoring in remote areas | Requires additional signal amplifiers | Uses 2G’s wide coverage directly—no extra devices needed |
| Battery-powered low-power devices | Overlapping power consumption of multiple modules, short battery life | Low-power design—extends battery life by 3x or more |
SIM900A Core Hardware Specifications
| Parameter Category | Detailed Specifications |
|---|---|
| Core Model | SIM900A (SIMCom) |
| Operating Frequency Bands | Dual bands: GSM 850/900/1800/1900 MHz |
| Physical Dimensions | 42.5mm × 33.6mm × 2.5mm (Note: Compact version dimensions: 24×24×3mm) |
| Supply Voltage | 5V (Note: Voltage range: 3.1V – 4.8V for stable operation) |
| Operating Current | – Call: 200mA (peak: 500mA); – Standby: <18mA; – Sleep: 2mA (1.5mA for compact version) |
| Data Transmission Rate | GPRS Class 12: Downlink 85.6 kbps / Uplink 42.8 kbps |
| Supported Functions | Voice calls, SMS (text/PDU), GPRS data, TCP/IP, HTTP/FTP |
| Interface Type | UART (Baud rate: 1200~115200 bps), SPI, I2C |
| Operating Temperature | -40℃ ~ 85℃ (Industrial grade) |
| SIM Card Compatibility | 1.8V/3V standard SIM card (supports hot-swapping) |
| Antenna Interface | 50Ω SMA interface (external GSM antenna) |
SIM900A DATASHEET
We provide you with the SIN900A datasheet for your reference：
SIM900A Hardware Structure
Shipping Cost
We only ship to the United States. Shipping costs are calculated based on the total order amount.
Shipping Method And Delivery Time
All orders will be processed and shipped within 72 hours of placing the order (excluding weekends and holidays). They will ship from Shenzhen, China, primarily via 4PX logistics. Depending on the destination and logistics conditions, other carriers such as DHL, FedEx, UPS, USPS, etc., may also handle the delivery. Estimated shipping time is 7-12 business days, with actual delivery occurring in 10-17 business days, depending on logistics conditions.
Payment:
We accept Visa, Master card, Maestro, American Express, JCB, Dinner's Club, Discover, Paypal, Apple Pay, Google Pay .
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