ITEAD SIM900/SIM900A GPRS/GSM Module
Description
- ITEAD SIM900/SIM900A GPRS/GSM Module
- SIM900 Quad-band: 850/ 900/ 1800/ 1900 MHz
- SIM900A Dual-band: 900/ 1900 MHz
- Offers Low power consumption
- Communicates with controllers via AT commands
- Supports software power on and reset
- RoHS compliant
The ITEAD SIM900/SIM900A GPRS/GSM Module is a breakout board and minimum system of SIM900 Quad-band/SIM900A Dual-band GSM/GPRS module.
It can communicate with controllers via AT commands (GSM 07.07,07.05 and SIMCOM enhanced AT Commands). This module supports software power on and reset.

Compliant to GSM phase 2/2+Class 4 (2 W @850/ 900 MHz). Low power consumption: 1.5mA (sleep mode). GPRS multi-slot class 10/8GPRS mobile station class B.
- 1 x ITEAD SIM900/SIM900A GPRS/GSM Module
Size
- Board size: 71.4 x 66 x 1.6 mm
- Operation temperature: -40 to +85 °C
- Low power consumption: 1.5 mA (sleep mode)
- Power voltage (Vsupply): Min.: 4.5 | Max: 5.5 VDC
- Input voltage VH: Min.: 0.7 VCC | Max 5.5 V
- Input voltage VL: Min.: -0.3 | Max: 0.3 VCC V
- Current Consumption (pulse): 2000 mA
- Current Consumption (continuous): 500 mA
- Baud rate:115,200 bps
- Indicators : PWR, status LED, net LED
- Power supply: 5V
- Communication Protocol: UART
- RoHS: Yes
- Weight: 40 g
It is what I expected. It works fine. Good dellivery.
We will update most of our projects with this module. Very good!
Very stable, simple connection, works well even with poor network strength. Many of our projects are using this module, and we will keep using it. Great Itead product.
I use this module for the last 3 years. Still very good and stable. One problem detected! Working above 50 degrees celcius some of the modules got problems and didn´t recovered. Some others recovered and become ok again whem temperature goes lower! In datasheet the acceptable working temperature should be higher than 50 degrees... I will continue using this module.
I´ve tried many similar products but the ITEAD SIM900 GPRS/GSM Module is the better one. Very stable and veru robust, never give me problems so far. I will increase it´s use in my projects.
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Refund Policy
If you are not satisfied with a product purchased from the Site, you may request a return within 30 days from the delivery date, unless the product is listed under the Return Exceptions below or is subject to specific return conditions noted on the product page.
Please review the Return Conditions, Return Exceptions and the process on How to Request a Return Authorization (RA) before initiating a return request.
Returns under this policy concern non-defective products. In the case of a confirmed manufacturing defect, remedies are handled under the Warranty terms, at RoboItchi's discretion. See the Warranty section.
Return Conditions
To qualify for a refund under the 30-day return policy, all of the following conditions must be met:
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- The RA number is valid for 30 days. The returned item must be received within that period.
- The RA number must be included with the return.
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Return Exceptions
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- On-Demand Items — Standard catalogue products not stocked by RoboItchi and ordered specifically to fulfill a customer request.
- Professional & Specialized Equipment — See the Professional & Specialized Equipment Warranty page and Professional & Institutional Buyers (B2B) section in the Terms & Conditions.
How to Request a Return Authorization (RA)
To request a return, submit a support ticket from your account under My Support Tickets to obtain a Return Authorization (RA) number. Returns without an RA number will be refused.