# Module SIM800L

<el-tag effect="plain">SKU:M004</el-tag>

<div class="product_pic"><img src="assets/img/product_pics/module/module_sim800_01.webp"><img src="assets/img/product_pics/module/module_sim800_02.webp"></div>

## Description

**SIM800L** is a cellular phone module, integrated SIM800L, a GSM/GPRS module, only cpmpatible with 2G network. if you want to integrate a cellular module into your design with vioce, text and SMS, this hand-solderable module is pretty nice!

## Product Features

-  3.5 mm phone audio jack
-  MIC (MIC is disable by default. To enable it, you will need to weld a 0 ohm resistor at MIC-EN )
- Supply voltage: 3.8V - 4.2V
- Recommended supply voltage: 4V
- Power consumption:
    sleep mode < 2.0mA
    idle mode < 7.0mA
    GSM transmission (avg): 350 mA
    GSM transmission (peek): 2000mA
- Module size: 25 x 23 mm
- Interface: UART (max. 2.8V) and AT commands
- SIM card socket: microSIM (bottom side)
- Supported frequencies: Quad Band (850 / 950 / 1800 /1900 MHz)
- Antenna connector: IPX
-  Spring Antenna on board
- Status signaling: LED
- Working temperature range: -40 do + 85 ° C


?> **M5Stack Fire** has occupied GPIO16 / 17 to connect with the PSRAM by default, it's conflict with TXD / RXD (GPIO16, GPIO17) of SIM800L module. Therefore, when using the SIM800L module with the M5Stack Fire, you might have to cut the TXD and RXD from SIM800L module and wire fly to another set of UART pin


## Include

-  1x M5Stack SIM800L Module

## Applications

-  Nitrogen dioxide alarm
-  Automatic Web Spider SMS-notifier
-  Remote meter reading system


## Specification

<table>
   <tr style="font-weight:bold">
      <td>Resources</td>
      <td>Parameter</td>
   </tr>
   <tr>
      <td>Net weight</td>
      <td>17g</td>
   </tr>
   <tr>
      <td>Gross weight</td>
      <td>27g</td>
   </tr>
   <tr>
      <td>Product Size</td>
      <td>54.2*54.2*12.8mm</td>
   </tr>
   <tr>
      <td>Package Size</td>
      <td>60*57*17mm</td>
   </tr>
 </table>

## EasyLoader

<img src="https://m5stack.oss-cn-shenzhen.aliyuncs.com/image/EasyLoader_logo.webp" width="100px" style="margin-top:20px">

<a href="https://m5stack.oss-cn-shenzhen.aliyuncs.com/EasyLoader/Module/EasyLoader_SIM800L_at.exe"><el-button type="primary">download EasyLoader</el-button></a>

>1.EasyLoader is a simple and fast program burner. Every product page in EasyLoader provides a product-related case program. It can be burned to the master through simple steps, and a series of function verification can be performed.

>2.After downloading the software, double-click to run the application, connect the M5 device to the computer via the data cable, select the port parameters, and click **"Burn"** to start burning.

?>3.The CP210X (USB driver) needs to be installed before the EasyLoader is burned. [Click here to view the driver installation tutorial](en/related_documents/M5Burner#install-usb-driver)

## Related Link

-  **AT Command** 
   - [SIM800 AT Command](https://m5stack.oss-cn-shenzhen.aliyuncs.com/resource/docs/datasheet/module/SIM800_Series_AT_Command_Manual_V1.09.pdf)

## Schematic

<img src="assets/img/product_pics/module/sim800_sch.webp">

## MBUS PinMap

<img src="assets\img\product_pics\module\module_bus.webp"/>

## PinMap

**SIM800**

| SIM800 Pin        | ESP32 Chip      |
| :----------:  |:------------: |
| TXD        | U2RXD(GPIO16)         |
| RXD        | U2TXD(GPIO17)         |
| RST        | GPIO5         |

## Example

### 1. Arduino

[Sample code for sending SMS](https://github.com/m5stack/M5Stack/tree/master/examples/Modules/SIM800L)

[AT transparent transmission + network test](https://github.com/m5stack/M5Stack/tree/master/examples/Modules/SIM800L/SIM800L_FactoryTest)

[HTTP Request](https://github.com/m5stack/M5Stack/tree/master/examples/Modules/SIM800L/HTTP)


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