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TC20 4G IoT Module
TC20 4G Modem Module
TC20 4G Wi-Fi Module
TC20 4G Modem Module
TC20 4G Module
TC20 4G IoT Module
TC20 4G Modem Module
TC20 4G Wi-Fi Module
TC20 4G Modem Module
TC20 4G Module

TC20-A/B Wi-Fi 4G Modem Module

  • Cat.4 4G Modem Module
  • 2.4GHz 300Mbps Wi-Fi
  • ESIM USIM Card Support
  • Antenna IPEX 4G 2T2R
  • Size 80mm (L) × 60mm (W)

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TC20-A/B Wi-Fi 4G Modem Module



  • LTE Cat.4 4G Modem Module PCBA
  • Standard Connection for Plug-and-Play
  • USB / RS232(RS485) / RJ11 / I2C / GPIO
  • GNSS High Accuracy Positioning
  • Built-in General Protocols (MQTT/TCP/UDP...)
  • Support FOTA and Custom UI
  • Free To A Variety of ID Designs 


  • TC20-A/B is the highly integrated Wi-Fi 4G modem module of ThinkWill Communication not only for the PCBA of hot-selling 4G LTE CPE but also used as an industrial router or DTU to accomplish networking and data transmission functions. Combined with an additional built-in integrated 100M network port, this 4G modem module can offer a commercial and diverse 4G wireless Internet access solution. It also supports battery charging, GNSS positioning, and other application functions.


  • Equipped with plentiful network standard protocols and abundant standard interfaces such as USB / RS232 (RS485) / I2C / GPIO control, etc., TC20-A/B 4G modem module can be widely used in various DICT application fields, such as industrial DTU, wireless routing, security monitoring, and other medium-rate data transmission scenarios.


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Frequency Bands

China & Southeast Asia Europe & Africa Asia Pacific Middle East America

LTE: B1/3/5/8/38/40/41







We welcome worldwide wireless communication/telecom operators or IoT project contractors to inquire more on TC20-A/B 4G modem module about global frequency band customization, customized UI / Application / Function / Appearance service, etc.




  • Industrial DTU
  • WiFi Router
  • 4G CPE

IoT Terminals

  • Smart Home
  • Smart Industrial
  • Smart Medical


  • Remote Meeting
  • Remote Control
  • Distance Education




TC20-A/B Wi-Fi 4G Modem Module

  TC20-A/B 4G modem module is a finished development board for a portable wireless router or WiFi CPE device. It is easier to design your brand CPE router device.


  Also, this 4G modem module supports various OEM and ODM assuming the operator has branded demand. Variants can be vertical or horizontal in product form, 300Mbps / 150Mbps WiFi, internal / external LTE antenna, with / without built-in lithium battery. And here the finished product TC20 4G SIM Card Router CPE Wireless.


  ThinkWill's engineering team can offer superior customization services with their specialty in IoT and wireless communication industry.


TC20-A/B Wi-Fi 4G Modem Module

Basic Parameters


80mm (L) × 60mm (W)×1.6mm (H)

Working temperature

-30℃ to +70℃

Power supply


Storage temperature

-40℃ to +85℃



Internal / External Antenna IPEX 4G
2T2R, WiFi *2, GPS *1


GPIO Reserved 4PIN

USB 2.0

USB2.0 *1


100M *1


3LINE *1 (3.3V TTL)


standard SPI


Nano SIM *1


Power *1

Working Network Status 4G *1

WiFi *1

Signal Status *1

Network Configuration

Data transfer
rate (Mbps)

FDD-LTE: Up to 150Mbps(DL), 50Mbps(UL)
TDD-LTE: Up to 130Mbps(DL), 30Mbps(UL)
WCDMA: Up to 21Mbps(DL), 5.76Mbps(UL)
TDSCDMA: Up to 2.8Mbps(DL), 2.2Mbps(UL)


WLAN: HT20: ≥80Mbps; HT40: ≥90Mbps

WLAN: 17dBm in 802.11b; 14dBm in 802.11g; 13dBm in 802.11n

WLAN: -85dBm in 802.11b; 70dBm in 802.11g; -g66dBm in 802.11n

LTE Sensitivity

Compliant with 3GPP standards


IEEE802.3, 10/100Mbps auto-sensing, auto-MDX

Transmit power

LTE: 23 ±2dBm (Power class 3)


TC20 4G Modem Module Diagram

Q: What Is A 4G Modem Module

A: 4G modem module is an ideal wireless communication solution for numerous IoT terminals and applications typically with LTE Cat.4 150Mbps DL / 50Mbps UL speed connectivity. In addition, equipped with plentiful network standard protocols and rich standard interfaces, the 4G modem module can be applied in various DICT application fields.


Q: How Does A 4G LTE Modem Work

A: 4G LTE modem functions by a wireless cellular connection (insert activated SIM card) to access the Internet. And to accelerate the deployment of the 4G LTE modem, ThinkWill designs the TC20 4G modem module as a router PCBA, configured with peripheral interfaces such as WiFi, Ethernet socket, USB, UART, etc. After the carrier completes the branding appearance composition, the 4G modem module can mature into a portable 4G LTE modem or industrial router.


Q: 4G LTE Modem Module with SIM Card Slot / Ethernet Port

A: Yes! ThinkWill configures the 4G LTE modem module with eSIM / Nano SIM card slots support and one RJ45 Ethernet port. At the same time, the modem module configures an RJ11 interface for telecommunication.


The product pictures and screen content on the above pages are for illustration only. The actual product effects (including but not limited to appearance, color, size) and screen display content (including but not limited to background, UI, and graphics) may be slightly different, please subject to the actual product.

The data on the above page are theoretical values, all from ThinkWill's internal laboratory, obtained under a specific test environment (please see each specific description), actual use may be due to individual product differences, software versions, use conditions and environmental factors The difference is slightly different, please refer to the actual use.

Due to the real-time changes in product batches and production supply factors, in order to provide as accurate product information, specification parameters, and product features as possible, ThinkWill may adjust and revise the text descriptions, picture effects and other content on the above pages in real time to match the actual products. Performance, specifications, indexes, parts and other information are matched.

In the event that the above-mentioned modifications and adjustments are indeed necessary, no special notice will be given.

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Shenzhen ThinkWill Communication Technology Co., Ltd.

+86 755-21601999
+86 177 2249 5914
13th Floor, Yishang 3D Industrial Park, No.642-2 Zhoushi Road, Hangcheng Street, Baoan District, Shenzhen, China


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