SIM800L Flash Firmware

We will flash SIM800H firmware to this module, firmware download link:

https://simcom.ee/documents

We download this firmware:

SIM800L Module Pinout:

Connection: ( Here, I power it with 3.7V lithium battery, you can

power it with DC power supply too)

SIM800L            CP2102                  3.7V battery

VCC                                                          Positive

RST                                                         Negative

TX                             RX

RX                            TX

GND                       GND                      Negative

Note: RST need connect with switch and negative of battery

After connected, the blue LED of the SIM800L will blink fast.

Flash tool download link:

http://surl.li/bdcsr

After download, please install flash tool:

Open flash tool, and make setting as below and choose the firmware file :

About the COM port, please check it in your computer’s device manager.

Click Start Download, then press the switch, it will begin to download

It need download several files, and will take a few minutes

When downloading, the TX and USBGND LED of CP2102 serial port module will turn on, LED of SIM800L will turn off.

If you see this message, just click OK

Once click OK, it will show this, that means success.

Remove RST cable and open serial port software, you can send ATI and AT command, then you will see below message:

Reference link:
https://www.youtube.com/watch?v=YOG7x_UbTPQ

Firmware download link: (please download SIM800H)

https://simcom.ee/documents

 

Note: If this firmware can not flash success, you can download other firmware  and try.

DIYmall 2 Channel Relay Module GSM Remote Control Switch SMS Manual

Before using this device, please send a text message for authorization first. Then you can send a message command to control relay.

Authorized number configuration: This system supports up to 3 authorization numbers. Format:*code*# N Authorized number #, after setup successfully, the device will reply, SMS Content is: User(N) Number: number is set ok.
For example, if system code is 123456, and you want to set the first authorized number is 18846919911, you can send the SMS:*123456*#118846919911#
The device will reply, content is: User1 Number: 18846919911 is set ok! The new authorization number is saved in the device; and you want to set the second authorized number is 18846919900, you can send the SMS:*123456*#218846919900#
The device will reply, content is: User2 Number: 18846919900 is set ok!. The new authorization number is saved in the device.

Code configuration: Format: *6 old code number**6 new code number*. After setup successfully, the device will reply, SMS Content is: SYS Code: 6 new code numbers set ok. For example, if system code is 123456, you want to revise the new code is 666666, send the SMS:*123456**666666*
The device will reply, content is: SYS Code: 666666 Set OK. Note that only authorized number can change the code. The new code is saved in the device.

The cell phone SMS control
Relay1 On command: ON1, after successful setup, the device will reply SMS is: REALY1 set on! For example, send the SMS: ON1. Relay status will be saved

Relay1 Off command: OFF1, after successful setup, the device will reply, SMS Content is: REALY1 set off! Send the SMS: CMOF. Relay status will be saved

Relay2 On command: ON2, after successful setup, the device will reply SMS is: REALY2 set on! For example, send the SMS: ON2. Relay status will be saved

Relay2 Off command: OFF2, after successful setup, the device will reply, SMS Content is: REALY2 set off! Send the SMS: OFF2. Relay status will be saved

System status query instruction: STA. For example, sends the SMS: STA. The device will reply the state of two relay

Any question please email sales@diymalls.com

ebay link: https://www.ebay.com/itm/273103300932
aliexpress link: http://aliurl.cn/NG035S
website link:

SIM800L GPRS GSM Module DIYmall

What you need 
SIM800L module X 1
GSM Antenna X  1
CP2102 Module X 1
Several Cables
DC Power Supply
Software SSCOM3.2

NOTE: The input voltage is  3.7-4.2V

Connection:

SIM800L      CP2102         DC Power Supply
TX                   RX
RX                   TX
GND                GND             GND
VCC                         VCC( 3.7-4.2V)


Open software SSCOM3.2, then you can send AT command:

For more AT command, please download from this link 
https://drive.google.com/open?id=1MR7HtLoeCq7svqtESLwl7Z8-Zvt40XwQ

Where to buy?
Product link http://www.diymalls.com/index.php?route=product/product&product_id=71&search=SIM800L

eBay link  https://www.ebay.com/itm/182736378127

aliexpress link  http://aliurl.cn/CUUDOG

Bulk order please contact sales@diymalls.com