SIM800L GSM Module
The SIM800L is a GSM module from Simcom that gives any microcontroller GSM functionality, meaning it can connect to the mobile network to receive calls and send and receive text messages, and also connect to the internet using GPRS, TCP, or IP. Another advantage is that the board makes use of existing mobile frequencies, which means it can be used anywhere in the world.
SIM800L Pinout Configuration
| Pin Number | Pin Name | Description |
| 1 | NET | External antenna attachment pin |
| 2 | VCC | Power supply pin, 3.4V to 4.4V input |
| 3 | RST | Reset pin, pull low for 100ms to perform hard reset |
| 4 | RXD | Serial data input |
| 5 | TXD | Serial data output |
| 6 | GND | Module ground reference |
| 7, 8 | SPK | Speaker differential output |
| 9, 10 | MIC | Microphone differential input |
| 11 | DTR | Serial data terminal ready pin, pull high to enable sleep mode |
| 12 | RING | Interrupt output, active low |
Features and Specifications
- Full modem serial port
- Two microphone inputs and speaker output
- SIM card interface
- Supports FM and PWM
- Sleep mode with 0.7mA current
Note: Complete technical details can be found in the SIM800L datasheet given at the end of this page.
Equivalent For SIM800L:
SIM808
Other GSM Modules:
SIM900, SIM908
Applications
- Home automation
- Emergency systems
- Remote sensing
- Communication