Description
SIM 800A GSM Modem with SMA Antenna
The SIM800A Dual-Band GSM/GPRS Module with RS232 Interface is a complete solution for Dualband GSM/GPRS communication. With the SIM800A GSM module, you can transmit voice, texts, and data over mobile carriers and communicate with it using protocols such as RS232, UART, and I2C.
This can be easily configured using AT commands, making it an ideal choice for interfacing with various microcontrollers and/or PCs. It also has a built-in SIM slot and can connect to networks operating at the supported frequency, providing you with a new channel of communication through voice, SMS texts, and data. The SIM800A module includes an SMA connector and antenna, ensuring reliable signal strength to the network.
Connection Details:
The module has to be powered through the onboard DC jack with an input voltage between 9-12V The module can be connected to the microcontroller via the onboard UART or I2C pins. The module also contains an onboard RS232 connector, to connect to other devices via RS232 protocol.
Connections with Microcontroller:
| Micro-controller | SIM800A |
| 5V | VCC (not required if powered externally |
| GND | GND |
| Tx | Rx |
| Rx | Tx |
Features:
- Quad-band GSM/GPRS module
- Frequencies supported: GSM 850MHz, EGSM 900MHz, DCS 1800MHz, and PCS 1900MHz
- Supports GPRS multi-slot class 12/ class 10 (optional)
- GPRS coding schemes supported: CS-1, CS-2, CS-3, and CS-4
- SMA antenna connector
- RS232 interface for communication
- UART and I2C breakouts for easy connection with a computer or laptop
- Inbuilt powerful TCP/IP protocol stack for internet data transfer over GPRS
- Low power consumption
- Operating temperature range: -40°C to +85°C
- Some models may support Bluetooth function
- Programmable general-purpose input and output (GPIO)
- Power supply voltage: 12V
- Dual-band frequency range: 900/1800MHz
Applications:
- Remote Data Monitor and Control.
- IoT Applications
- AMR (automatic meter reading).
- Power station monitoring and control.
- Remote POS (point of sale) terminals.
- Traffic signals monitor and control.
- Fleet management.
- Vending machine.
- Traffic info guidance.
- Parking meter and Taxi Monitor.
- Telecom equipment supervision (Mobile base station, microwave or optical relay station)
Specifications:
| Model | SIM800A |
| Voltage Supply (VDC) | 9-12 |
| Frequency Bands | GSM 900/1800 MHz |
| Operating Temperature | -40°C to +85°C |
| Dimensions | 24 x 24 x 2.5mm |
| Weight | 10g |
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