800C GSM Module 3.3/5V - Compatible
This GSM/GPRS development board is based on SIM800C chip supporting Bluetooth function and AT command control via the serial port. The board features an on-board SIM card slot and supports 850/900/1800/1900MHz quad band which can be used worldwide. It is equipped with 5V/3.3V logic converter circuit compatible with most MCU breakout boards to obtain the SMS and TTS function.
Quick Spec
- Power Supply (Vin): 5V from power adapter or 3.5-4.5V from a lithium battery.
- Supports MCU level: 5V / 3.3V for TTL logic
- Compatible antenna: IPEX-PCB antenna or IPEX-SMA antenna
Pinout

Wiring Diagram
NOTE: The board requires a dedicated 2A power supply with 100uF and 10uF capacitors placed over VCC and GND.
Sample Code
Sending SMS via SIM800
For the test work try to send SMS. To start, send the command: AT + CMGF = 1. If there is an ERROR-most likely did not pass the registration of SIM-ki in the network.
| AT command | Answer | Notes | |
|---|---|---|---|
| AT + CMGF = 1 | Ok | We Translate into text mode of sending messages. | |
| AT + CSCS = "GSM" | Ok | CharSet: "GSM" GSM 7 bit default alphabet (3GPP TS 23,038); "UCS2" 16-bit universal multiple-octet coded character set (ISO/IEC10646); UCS2 character strings are converted to hexadecimal numbers from 0000 to FFFF; e.g. "004100620063" equals three 16-bit characters with decimal values 65, 98 and 99 "IR A" International reference alphabet (ITU-T T. 50) "H EX" Character strings consists only of hexadecimal Bers from 00 to FF; "PCCP" PC Character set Code "PCDN" PC Danish/Norwegian Character Set "8859-1" ISO 8859 Latin 1 Character set | |
| AT + CSCS? | + CSCS: "GSM" | Check that the correct code table has been installed correctly. | |
| AT + CMGS = "+ 796019xxxxx" | > | The phone Number is required with +, otherwise there will be an error message: + CMS ERROR: Invalid input value. After The command is run, you will be prompted to enter the text of the message to be completed by sending CTRL-Z (0x1A or (char) 26). Unfortunately, Arduino Serial Monitor does not allow you to send this code, so only programmatically. |
Resources
Shipping List

- 1 x 800C GSM Module 3.3/5V - Compatible
- 1 x GSM Quad Band Antenna - 50mm
- 1 x IPEX to SMA Adapter Cable - 150mm
800C GSM Module 3.3/5V - Compatible
- Brand: Generic
- Product Code: 800C-GSM-MOD
- Weight: 0.015kg
- Product Status : Active
Stock
| Warehouse | Stock Status | Location |
|---|---|---|
| Centurion | No Stock | |
| Stellenbosch | No Stock |
We ship free of charge between branches to complete your order.
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R159.00 (Inc Tax: R182.85)
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Tags: 800c, gsm, comm, communication, module, 3.3v, 5v, compatible, sim800c,





