T-SIM7600X get it now

Overview

T-SIM7600X is a 4G LTE Cat-4 IoT development board based on ESP32-WROVER-B (N4R8: 4 MB Flash, 8 MB PSRAM) and the SIM7600 series cellular module. All variants share the same PCB design — the only difference is the modem chip, which determines the supported regional frequency bands. Features Nano SIM slot, TF card, 18650 battery support, and 2 × 16-pin 2.54 mm IO expansion. 111 × 34 × 19 mm.

Variant Comparison

Variant	Modem	Region	LTE-FDD	LTE-TDD	GSM
T-SIM7600E	SIM7600E	Europe / Middle East / Africa / South Korea / Thailand	B1/B3/B5/B8/B20	—	900/1800 MHz
T-SIM7600G	SIM7600G	Global	B1/B2/B3/B4/B5/B7/B8/B12/B13/B18/B19/B20/B25/B26/B28/B66	B34/B38/B39/B40/B41	850/900/1800/1900 MHz
T-SIM7600SA-H	SIM7600SA-H	South America / Australia / New Zealand	B1/B2/B3/B4/B5/B7/B8/B28	—	850/900/1800/1900 MHz

Quick Start

Example Support

Example	PlatformIO/Arduino	ESP-IDF	Description
LilyGo-Modem-Series	✓		LTE, GPS, AT command examples

PlatformIO

1. Install Visual Studio Code and Python
2. Search for and install the PlatformIO IDE extension in VS Code
3. Clone the LilyGo-Modem-Series repository
4. Open platformio.ini, uncomment default_envs = T-SIM7600X and the desired src_dir line
5. Click ✓ to compile, click → to upload

Arduino

1. Install Arduino IDE
2. Add ESP32 boards URL: https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json
3. In Tools → Board, configure:

Arduino IDE Setting	Value
Board	ESP32 Dev Module
Upload Speed	921600
CPU Frequency	240 MHz (WiFi/BT)
Flash Frequency	80 MHz
Flash Mode	QIO
Flash Size	4MB (32Mb)
Partition Scheme	Huge APP (3MB No OTA/1MB SPIFFS)
PSRAM	Enabled
Core Debug Level	None

4. In utilities.h, uncomment #define LILYGO_T_SIM7600X
5. Click Upload

Note: Do not update libraries when prompted in Arduino IDE — updated versions may break compatibility (e.g. TinyGSM).

Development Platforms

1. PlatformIO
2. Arduino IDE
3. ESP-IDF

Related Videos

Key Features

• ESP32-WROVER-B (N4R8) @ 240 MHz, 4 MB Flash, 8 MB PSRAM, Wi-Fi + BT 4.2
• SIM7600X LTE Cat-4, max 150 Mbps downlink / 50 Mbps uplink
• Integrated multi-constellation GNSS
• Nano SIM, TF card, 18650 battery, 2 × 16-pin 2.54 mm expansion

Product Parameters

Feature	Specification
MCU	ESP32-WROVER-B (N4R8), dual-core LX6 @ 240 MHz
Flash	4 MB
PSRAM	8 MB
Wi-Fi	2.4 GHz 802.11 b/g/n
Bluetooth	BT 4.2
Cellular	SIM7600X LTE Cat-4 (variant dependent)
Max Downlink	150 Mbps
Max Uplink	50 Mbps
GNSS	Multi-constellation
SIM	Nano SIM
Storage	TF card, 18650 battery holder
USB	1 × Type-C
Expansion	2 × 16-pin 2.54 mm IO
Mounting Holes	4 × 2 mm
Dimensions	111 × 34 × 19 mm

Pin Diagram

Function	GPIO
Modem TX	27
Modem RX	26
Modem PWRKEY	4
Modem RING	33
Modem DTR	32
Modem Flight Mode	25
Modem Status	34
Board LED	12
SD SCK	14
SD MISO	2
SD MOSI	15
SD CS	13
Battery ADC	35
Solar ADC	36
Default SDA	21
Default SCL	22

⚠️ Do not connect any wires to GPIO4, GPIO25, GPIO32, or GPIO33 header positions — these are reserved for modem functions.

Dimension Diagram

Schematic

• T-SIM7600X Schematic

Datasheet

• ESP32 Datasheet
• SIM7600 Series Datasheet

Software Development

• LilyGo-Modem-Series GitHub Repository

Dependent Libraries

• TinyGSM
• TinyGPSPlus
• StreamDebugger

FAQ

• Q. Why does my board fail to upload? A. Hold down the BOOT button and try uploading again.

• Q. What is the difference between T-SIM7600E / G / SA-H? A. The PCB and firmware are identical. The only difference is the modem chip, which determines the supported frequency bands and regions — choose the variant that matches your deployment region.

• Q. Does T-SIM7600X support GPS? A. Yes — SIM7600 integrates multi-constellation GNSS. Connect an active GPS antenna to the GNSS connector.

• Q. SIM card not detected. A. Insert the SIM card before powering on. Hot-inserting may cause detection failure.

Version History

Version	Release Date	Update Description
V1.0	—	Initial version