SIM800L GSM GPRS Module – Quad-Band UART

The SIM800L GSM GPRS Module adds 2G cellular communication to embedded projects. Send SMS alerts, make voice calls and exchange GPRS data using UART serial commands. It suits Arduino, ESP32 and other microcontroller projects with suitable power and logic-level interfacing.

Key specifications

Applications

Build SMS alarms, remote sensor reporting and home-automation prototypes. Add cellular communication to tracking projects that use a separate GPS receiver.

Power and connection notes

Use a stable supply with short power connections and suitable local decoupling. Do not connect a 5 V supply directly to this board. Share ground with the controller and use suitable UART level conversion; the SIM800L serial interface uses approximately 2.8 V logic.

Frequently asked questions

Does SIM800L work in India?

Yes, where a compatible 2G GSM network is available. Confirm local coverage and SIM support with your operator before ordering. This module does not support 4G LTE or 5G.

Can I use it with Arduino or ESP32?

Yes. Connect through UART with appropriate logic-level conversion and a separate suitable power supply. Control the module using AT commands.

Can it send messages and make calls?

Yes. SMS and voice are supported when enabled by your SIM plan and network. Voice projects also need external audio hardware.

Does it have built-in GPS?

No. Use a separate GPS receiver when your project needs satellite positioning.

What is included?

One SIM800L GSM GPRS module per ordered unit. A SIM card, power supply and microcontroller are not included.

Technical reference: SIMCom SIM800H/SIM800L hardware design guide. Follow the board supply range above.