Ready to Ship
Fast dispatch
In stock
Note: Always contact your supplier to determine if the coronavirus (COVID-19) will affect your order.

Fast smallest mini m2m iot Industrial SMS Mobile Broadband Universal GSM LTE SIM Card Slot 3G 4G USB Modem with external antenna

1-49 Pieces
50-99 Pieces
>=100 Pieces
Min. Order
1 Piece
Choose your specifications
Company Information

Shenzhen Homtecs Technology Company Limited

CN Manufacturer, Trading Company
Response Time
Response Rate:
US$ 2,000+
10 Years Paid Supplier Gold Supplier Onsite Check Trade Assurance
Learn More

Quick Details

Place of Origin: Guangdong China
Brand Name: HOMTECS
Model Number: M3, M4
Certification: CE ROHS
Type: Wireless
Interface Type: USB
Transmission Rate: 100Mbps
Style: External
Products Status: Stock
Color: Black
Network: 3G/4G
Function: SMS send and receive
Band rate: 300 - 1230400
Protocol: TCP/IP
Working temperature: -30 ~ +75℃
Storage temperature: -40 ~ +85℃
Dimension: 72.2x64x25.5 mm
Weight: 170g
Housing: Metal
Selling Units: Single item
Single package size: 25X15X10 cm
Single gross weight: 1 KG
Package Type: standard package

Fast mini m2m iot Industrial SMS Universal GSM LTE SIM Card 3G 4G USB Modem



M3 industrial 4g usb modem adopts industrial grade design, uses metal box. It can be used in the hostile environment -40~ +75.


It integrates all the commonly used protocols from logical link layer to upper application layer protocols, such as TCP/IP/UDP and so on. It provides a secure, high speed, reliable wireless internet connection for customers. It supports AT Command, including SMS and data.


This product has been widely used on finance, water supply, environment protection, electric power system, post and weather fields, industrial control, outdoor AD and ATM machine etc.




Basic informatin 

Interface typeUSB
Tranmission rateDown Link: 100MB/S, up Link: 50MB/S
Flash 1MB(Extendable)
Support 1.8V/3V SIM/Uim Card
Band rate
300 - 1230400
Operating temperature-30°C~75°C
Extend temperature -40°C~85°C
Operating Humidity  95% ( Unfreezing)
HousingIron, providing IP34 protection
Dimensions 72.2x64x25.5mm











Wireless Specification


2. UMTS900/2100MHZ, GSM850/900/1800/1900MHZ


Hardware System

1. High-powered MCU, 100M

2. Interface:
USB serial port, rates: 110~230400bits/s
Indicator lights: "Power", "ACT", "Online"
Antenna interface: Standard SMA female interface, 50 ohm
SIM/UIM interface: Standard user card interface
Power interface: USB

3. Wireless module:

High-powered industrial 3G module


Software function

1. Design with standard TCP/IP protocol stack
2. Adopt smart online keeping technology to make sure that IP MODEM is always online
3. Support RSA and RC4 encryption arithmetic
4. Support VPDN

5. Support transparent data transfer and protocol conversion. Support multi work modes
6. Support dynamic domain name(DDNS) and IP access to data center
7. Support double data centers, one main and another backup
8. Support multi data centers, It can support 5 data centers at the same time.

9. Support multi online trigger ways, including SMS, audio and data. Support link Disconnection when timeout
10. Support SMS backup and emergency report
11. Support hardware and software WDT
12. Reporting the status of data transfer

13. Standard AT command interface
14. Support common MODEM function
15. Support telnet function
16. Support remote configure and control

17. Easy to upgrade firmware
18. Support multi OS, such as WINDOWS, LINUX, SCO UNIX etc




Company Information