1. Introduction
The SIM8230G is a cutting-edge Multi-Band 5G NR/LTE-FDD/LTE-TDD module, representing SIMCom's first 5G RedCap offering. It supports Release 17 (R17) 5G Standalone (SA) operation, providing robust and flexible connectivity solutions.
This module is designed for applications requiring high-speed data transmission in diverse wireless environments, offering excellent efficiency, security, and adaptability. Its LGA form factor and AT command compatibility with SIM7600/8200/8260 series modules ensure ease of integration and reduced development costs.
2. Package Contents
The standard package includes the SIM8230G breakout module. Depending on the selected variant, additional components such as antennas may be included.
- 1 x SIM8230G Breakout Module
- Optional: 5G Antenna (Ultra Wide Band Antenna 698-6000MHz)
- Optional: GPS Antenna
- Optional: 2 Antennas (LTE and GPS)



3. Specifications
| Feature | Description |
|---|---|
| Model | SIM8230G |
| Type | Multi-Band 5G NR/LTE-FDD/LTE-TDD Module |
| 5G SA Bands | n1/n2/n3/n5/n7/n8/n12/n13/n14/n18/n20/n25/n26/n28/n30/n38/n40/n41/n48/n66/n70/n71/n77/n78 |
| LTE-FDD Bands | B1/B2/B3/B4/B5/B7/B8/B12/B13/B14/B17/B18/B19/B20/B25/B26/B28/B30/B66/B71 |
| LTE-TDD Bands | B34/B38/B39/B40/B41/B42/B43/B48 |
| GNSS Support | Yes |
| Form Factor | LGA |
| Interfaces | PCIe, USB2.0, GPIO, UART |
| Supply Voltage (VCC) | 5-10V (5.0V recommended) |
| TTL Series Data Logic Level | 3.3V |
| Default Baud Rate | 115200bps |
| Operating Temperature | -40°C to +85°C |
| PCBA Dimension | 40mm x 40mm |
| Certifications | CE(RED), GCF, FCC, PRCRB, RoHS, REACH |

- CN100: Micro SIM card socket
- CN101: 7pin 2.54mm header interface
- CN102: Micro USB interface
- D102: Power indicator (RED)
- D100: NET LIGHT indicator (Green)
- U106: The power conversion chip
- J109: GNSS antenna (optional)
- J104: LTE antenna
- TP105: 4.0V Test Point
- TP100: 3.3V Test Point
- TP106: 1.8V Test Point
4. Pin Definition
The SIM8230G breakout module features a 6-pin connector for essential functions. Refer to the table and diagram below for pin assignments.
| Pin Name | Pin Number | Mark on PCB | Description | Comment |
|---|---|---|---|---|
| SLEEP | 0 | N | Not connected | |
| GND | 1, 6 | G | Ground | |
| VCC | 2 | V | The power supply | 5V-10V |
| PWRKEY | 3 | K | Power on/off the module | CBL_PWR_N Shorted with GND via R105 and PWRKEY was no-connection to make module automatic Power on |
| TXD | 4 | T | Output, Transmit Data | TTL Series data Output, 3.3V logic level |
| RXD | 5 | R | Input, Receive Data | TTL Series data Input, 3.3V logic level |


5. Setup and Installation
Follow these steps to set up your SIM8230G breakout module:
- Install Antennas:
- Connect the MAIN antenna (LTE) to the 'MAIN' connector on the board.
- Connect the GPS antenna to the 'GPS' connector on the board.
- Insert SIM Card: Carefully insert your Micro SIM card into the CN100 Micro SIM card socket on the module.
- Power Supply Connection: Connect a power supply within the 5-10V range (5.0V recommended) to the VCC pin. The RED LED indicator (D102) should light up, indicating power.
- Power On: If the PWRKEY is configured for manual power-on, briefly short the PWRKEY pin to GND to power on the module. If configured for automatic power-on, the module will power on with the VCC supply.
- Observe Network Status: The GREEN LED indicator (D100, NET LIGHT) will show the network registration status.
- Blinking (100ms ON, 100ms OFF): Data transmission.
- Blinking (200ms ON, 200ms OFF): 4G network registered.
- Always High: Searching for network, establishing/maintaining voice call connections (including 5G and VoLTE).
- LED normally off: Shutdown, sleep mode, minimum power consumption mode.

Video 5.1: SIM8230G Module and Antenna Installation Guide
6. Operating Instructions
The SIM8230G module can be controlled via AT commands through a UART interface or USB.
6.1. AT Command Communication via UART
- Connect the module's TXD and RXD pins to your host device's UART interface. Ensure the logic levels are compatible (3.3V for the module).
- Use a serial terminal software (e.g., sscm32E.exe) on your computer.
- Configure the serial port settings:
- Baud Rate: 115200bps
- Data Bits: 8
- Stop Bits: 1
- Parity: None
- Flow Control: None
- Send AT commands to the module. For example,
AT+SIMCOMATIto get module information.

6.2. AT Command Communication via USB
- Driver Installation: Before connecting via USB, install the necessary drivers. The driver package is typically named "SIMCOM_5G_Windows_Driver_install_V1.06.zip" or similar. Follow the on-screen instructions during installation.
- Connect via USB: Connect the module to your computer using a Micro USB cable via the CN102 interface.
- Identify COM Port: After successful driver installation, the module will enumerate several COM ports in your device manager (e.g., Simcom HS-USB AT Port, Simcom HS-USB Diagnostics, Simcom HS-USB NMEA Port). Select the AT Port (e.g., AT Port 9001).
- Serial Software Configuration: Use a serial terminal software (e.g., sscm32E.exe) and configure it with the following settings:
- COM Port: Select the appropriate AT Port.
- Baud Rate: 115200bps
- Data Bits: 8
- Stop Bits: 1
- Parity: None
- Flow Control: None
- Send AT commands as needed.

7. Maintenance
To ensure the longevity and optimal performance of your SIM8230G module, follow these maintenance guidelines:
- Handle with Care: The module is a sensitive electronic component. Avoid dropping it or subjecting it to physical shock.
- Keep Dry: Protect the module from moisture and liquids. Water damage can lead to malfunction.
- Temperature Control: Operate and store the module within the specified operating temperature range (-40°C to +85°C). Avoid extreme heat or cold.
- Cleanliness: Keep the module free from dust and debris. Use a soft, dry cloth for cleaning if necessary. Do not use harsh chemicals.
- Static Electricity: Always handle the module in an ESD-safe environment to prevent damage from static discharge.
- Power Supply: Ensure a stable and correct voltage power supply (5-10V, 5.0V recommended) is used to prevent damage.
8. Troubleshooting
If you encounter issues with your SIM8230G module, refer to the following common troubleshooting steps:
- Module Not Powering On (RED LED off):
- Verify the power supply voltage is within the 5-10V range and correctly connected to the VCC and GND pins.
- Check if the PWRKEY pin is correctly handled (shorted to GND for manual power-on, or configured for automatic power-on).
- No Network Registration (GREEN LED behavior):
- If the GREEN LED is normally off, the module might be in shutdown or sleep mode. Ensure it's powered on and active.
- If the GREEN LED is always high, the module is searching for a network. Ensure the SIM card is correctly inserted and active, and that the antennas are properly connected. Check for network coverage in your area.
- Verify that the correct LTE/5G antenna is connected to the 'MAIN' port.
- AT Commands Not Responding:
- Check the serial port connection (UART or USB).
- Ensure the correct COM port is selected in your serial terminal software.
- Verify the baud rate is set to 115200bps.
- Confirm that the TXD and RXD lines are correctly connected (TXD of module to RXD of host, and RXD of module to TXD of host).
- If using USB, ensure the "SIMCOM_5G_Windows_Driver_install_V1.06.zip" driver is installed correctly.
- GPS/GNSS Not Functioning:
- Ensure the GPS antenna is correctly connected to the 'GPS' connector.
- Verify that the module is in an open area with clear sky view for optimal satellite reception.
- Check AT commands related to GNSS activation and status.
9. User Tips
Here are some tips to enhance your experience with the SIM8230G module:
- Antenna Placement: For best signal reception, position the LTE and GPS antennas away from other electronic components and metal objects. Consider external antennas for improved performance in challenging environments.
- Power Stability: Use a regulated power supply to provide stable voltage to the module, especially during high data transmission, to prevent unexpected resets or malfunctions.
- Software Tools: Familiarize yourself with the SIMCom AT command set documentation for advanced configuration and diagnostics. Utilize reliable serial terminal software for communication.
- Heat Management: While the module is designed for a wide temperature range, consider passive cooling (e.g., heatsinks) if operating in high-temperature environments or under continuous heavy load to maintain optimal performance and lifespan.
- Firmware Updates: Regularly check the manufacturer's website for firmware updates, which may offer performance improvements, bug fixes, or new features.
10. Warranty and Support
This product is manufactured by AND TECHNOLOGIES CO LTD. For warranty information and technical support, please refer to the official documentation provided with your purchase or contact the manufacturer directly.
Manufacturer Contact Information:
- Website: www.and-global.com
- Email: info@and-global.com
- WhatsApp: 008613760173367
Please retain your proof of purchase for any warranty claims.