Skip to product information
1 of 1




Out of stock

Regular price Rs. 1,131
Regular price Rs. 1,280 Sale price Rs. 1,131
Sale Sold out 12% off Best Price Guaranteed
You save Rs. 149 | Eligible for Free Shipping
Incl. GST (No Hidden Charges)
Currently, people are actively checking out this product.


FLAT ₹ 100/- OFF RC100

When you shop for ₹ 2500 or more.Applicable on Checkout.

*Coupons are not applicable on Original Boards and Kits

Submit your Bulk Enquiry Here

Contact form

  • This is SIM800A GSM-GPRS Modem
  • Quad-band operation across 850/900/1800/1900MHz frequencies
  • Supports GPRS class 2/10 for efficient data transmission
  • Control via AT commands, including 3GPP TS 27.007, 27.005, and SIMCOM enhanced AT command set
  • High-quality product suitable for professional applications
  • 5V interface for direct communication with MCU kits
  • Built-in SIM card holder and network status LED
  • Inbuilt powerful TCP/IP protocol stack for internet data transfer over GPRS
  • Low power consumption for energy efficiency

SIM800A GSM/GPRS Serial & TTL Modem

The SIM800A Quad-Band GSM/GPRS Module with RS232 Interface is a comprehensive solution for Quad-band GSM/GPRS communication, packaged in an LGA (Land Grid Array) format suitable for embedding in customer applications. The SIM800A module supports Quad-band operation across 850/900/1800/1900 MHz frequencies, enabling transmission of voice, SMS, and data with low power consumption.

With its compact dimensions of 100 x 53 x 15 mm, the module can easily meet the slim and compact requirements of custom designs. It includes an Embedded AT command set, offering cost savings and rapid time-to-market for customer applications.

The SIM800A modem features a GSM chip and an RS232 interface, allowing convenient connection to computers or laptops using a USB to Serial connector, or to microcontrollers using an RS232 to TTL converter. When connecting the SIM800A modem via the USB to RS232 connector, it is necessary to identify the correct COM port from the Device Manager of the USB to Serial Adapter.

Once the connection is established, you can use terminal software like Putty to open a connection to the designated COM port at a baud rate of 9600, which is the default baud rate for this modem. After establishing a serial connection through the computer or microcontroller, you can begin sending AT commands. When sending AT commands (e.g., "ATr"), the SIM800A modem should respond with "OK" or another appropriate reply depending on the specific command sent.


  • Quad-band 850/900/1800/1900MHz.
  • GPRS class 2/10.
  • Control via AT commands (3GPP TS 27.007, 27.005 and SIMCOM enhanced AT command set).
  • High-Quality Product (Not hobby grade).
  • 5V interface for direct communication with MCU kit.
  • Configurable baud rate.
  • Built-in SIM Cardholder.
  • Built-in Network Status LED.
  • Inbuilt Powerful TCP/IP protocol stack for internet data transfer over GPRS.
  • Low power.

Applications :

  • Remote Data Monitor and Control.
  • Water, gas, and oil flow metering.
  • AMR (automatic meter reading).
  • Power station monitoring and control.
  • Remote POS (point of sale) terminals.
  • Traffic signals monitor and control.
  • Fleet management.
  • Power distribution network supervision.
  • Central heating system supervision.
  • The weather station data transmission.
  • Hydro-logic data acquisition.
  • Vending machine.
  • Traffic info guidance.
  • Parking meter and Taxi Monitor.
  • Telecom equipment supervision (Mobile base station, microwave or optical relay station).

Package Includes:

  • 1 x SIM800A GSM/GPRS Serial & TTL Modem


Voltage  9V DC
Interface  UART Serial DB9
Dimensions  5 x 4 x 3cms
Weight 25 grams

Shipping & Returns

  • All orders confirmed before 3 pm IST are shipped on the
    same day, barring rare pickup delays on holidays or disturbances
  • Delivery time in Metro cities is 1-3 days, Others it is
    3-7 days. It varies based on location, reliant on courier services
  • Return window: 7 days from receipt unless stated
    otherwise. No refunds/replacements after
  • Returns only for non-working/damaged products are accepted
  • Initiate return requests to our customer service team via Support ticket or contact us at +91-8123057137
  • Refunds are processed within 3-4 working days post inspection and approval.

For more details, please check our Shipping and Return Policy

View full details

People Also Buy

Found a better price?

Let us know!
We'll try to match the price for you

  • ⚡ Dispatched within 24 hours

  • 💰 Earn RC Coins on every purchase

  • 🚚 Free shipping on orders above Rs 500/-

  • 🛠️ Dedicated Technical Support Team

1 of 4

1. What are the frequency bands supported by the SIM800A modem?

The SIM800A modem is a quad-band GSM/GPRS module that works on frequencies of 850/900/1800/1900 MHz

2. What is the SIM800A modem's power supply requirement?

The SIM800A modem requires a 12V DC 2-3 Amps adapter for power supply

3. What are the coding schemes supported by the SIM800A modem?

The SIM800A modem supports the GPRS coding schemes CS-1, CS-2, CS-3, and CS-4

4. What are the GPRS connectivity options for the SIM800A modem?

The SIM800A modem features GPRS multi-slot class 12/ class 10 (optional) connectivity

5. What is the UART port used for in the SIM800A modem?

The SIM800A modem has one UART port that is used for communication with a computer or laptop using the USB to the Serial connector or with a micro-controller using the RS232 to TTL converter