Shenzhen E-Lins Technology Co., Ltd.
Industrial 4G LTE Modem, 4G USB Serial WiFi Modem with High Gain Replacable Antenna
Industrial 4G LTE Modem, 4G USB Serial WiFi Modem with High Gain Replacable Antenna
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E-Lins modems mainly focus on 2G, 3G and 4G cellular modems. With high speed USB port for devices’ communication. 4G is 4G LTE, which is a new technology with 100Mbps download and 50Mbps upload speed. And can be easily updated to 150Mbps, 300Mbps,1000Mbps or higher speed.

For single sim 4G wifi modem, the main model is M300.

m300 specification

4G LTE usb modem is mainly used for industrial data transmission services, Internet access, SMS transmission, and network information query and is also compatible with the WCDMA/EDGE/GPRS/GSM network.

Usb standard interface communication effectively ensure the data transmission speed. E-Lins 4G LTE modem adopts industrial design standards featuring with super moisture, lightning protection, anti-electromagnetic interference ability.
With stable performance, small size, easy to install embedded, strong resistance to the environment and other advantages, it has been widely used in the industrial field.

Hot Spot of modem usb 4g lte
Built-in 2G/3G/4G industrial cellular modules, insert SIM/UIM card to work directly;
Built-in SIM/UIM card slot;
Broadband M2M communications
SIM failover/standby APN
3G/4G failover for fixed line broadband connections
Rapid service deployment applications
Support At command
USB port
GPS support (option)

USB Wireless Modem Industry application:
Power: remote automatic meter reading, voltage and current data real-time monitoring alarm, city power grid, street lamp control;

Security: Road site monitoring, remote access control system monitoring, anti-theft alarm;

Energy: coal mine, natural gas, oil field data collection, heating system regulation;

Traffic: motor vehicles, bank note vehicle monitoring and dispatching system, vehicle violation monitoring;

Environmental protection: real-time data acquisition station automatic control, tap water, sewage pipes, pumping station and water gate real-time monitoring and maintenance;

Finance: Bank savings and computer room monitoring, mobile securities trading and information query, POS system application;

Water resources: water level flood control monitoring, natural disaster prediction system;

Media: mobile advertising automatic download system, radio advertising management system;

Meteorology: remote collection and transmission of temperature and humidity data, weather forecast;

Transportation: industrial wireless remote sensing, telemetry, remote information return.

Typical Diagram

Typical Diagram

Specification of Industrial 4G Modem


Mobile Networks




CDMA2000 EVDO Rev 0/Rev A/Rev B



Cellular Frequency

UMTS/HSPA/HSUPA/HSPA/HSPA+/DC-HSPA+ (WCDMA/FDD) 850/1900/2100 MHz or 850/900/1900/2100Mhz/AWS optional

Quad-band EGSM 850/900/1800/1900Mhz

CDMA1x/EVDO: 800/1900Mhz or 450Mhz optional


Band 1--2100Mhz

Band 2--1900Mhz

Band 3--1800Mhz


Band 5--850Mhz

Band 7--2600MHz

Band 8--900Mhz

Band 12--700Mhz

Band 13--700(B13)Mhz

Band 17--700(B17)/AWS

Band 19—800Mhz

Band 20--DD800Mhz

Band 21

Band 25–1900Mhz G Block

Band 31– 450Mhz
Other FDD band(some bands are not listed)…


Band 41–2500/2600Mhz

Band 40 --2300Mhz

Band 39– 1900Mhz

Band 38 --2600Mhz

Other TDD band(some bands are not listed)…

3G TD-SCDMA: 2010~2025MHz/1880~1920MHz

Notes: There are many different band andfrequency for 4G LTE. Please confirm the detailed band and frequency with your carriers before order.




FDD LTE:100Mbps or 150Mbps or 300Mbps downlink, 50Mbps uplink;
TDD LTE: 150Mbps downlink, 50Mbps uplink;





HSDPA:Downlink 7.2 Mbps,Uplink384k bps;

WCDMA/UMTS:Downlink/Uplink 384 kbps;

EDGE:Downlink 236,8 kbps,Uplink 118 kbps;

GPRS:Downlink 85.6 kbps,Uplink 42.8 kbps;


Rev B: 14.7Mbps downlink, 5.4Mbps uplink
Rev A: 3.1Mbps downlink, 2.4Mbps uplink

Rev O: 2.4Mbps downlink, 153.6kbps uplink

3G TD-SCDMA: 2.8Mbps

Notes: the bandwidth is peak value. Real value depends on carrier network support.



50Ω SMA female interface *3, externaldetachable;

Antenna for Main Cell, MIMO Cell, GPS


Power indicator

Data indicator




USB 2.0 female


Power supply

DC5V-40V,option isDC5V-50V / DC5V-60V,typical DC9V1A or 12V1A or 12V2A

Power consumption


Average: 85mA@+9VDC





Mac OS;



Other OS with USB port;

At command

Support at command;

Packed with GUI software


Operating Temperature

Work temperature:-30°C to 70°C option for-30°C to 80°C

Storage temperature:-40°C to 85°C


95% Maximum (Non-condensing)


Item (L x B x H):87mm*50mm*23mm

Packaging (L x B x H): 102*70*23mm

PCBA: 84mm*48mm*20mm


150g (not including accessories and package)

Electromagnetic compatibility

anlistatig test:Class 3

Radio electromagnetism test:Class 3



1 Year, can extend up to 5 years

Package Contents

TheM300 Industrial 4GModem

USB cable

Power Adapter


CD-ROM with Product Documentation

Reserved node step industrial grade 4G router RSVP.

The following two steps will be taken when the industry 4G LTE Modem reservation request goes up the middle node:

Step 1: reserve link resources.

The RSVP process first passes the RSVP request to allow control and policy control. The industrial 4G LTE Modem allows control to determine whether the node has sufficient resources to satisfy the requested QoS. Policy control determines whether the user has the right to reserve such resources. If industrial-grade routers two check through, the node will set the package level discriminant mechanism, is used to choose according to filter described below coming packets, according to the requirement of the flow description at the same time, with the appropriate all CNC router link layer interaction in order to obtain needed resources such as bandwidth and buffer. If any check fails, the reservation is rejected, and the RSVP process returns an error message to the recipient of the request.

Step 2: forward the request.

After the successful inspection, the 4G industrial-grade router will find an upstream industrial grade LTE router address based on the soft state left by the downstream routing message, and forward the reservation request. The reservation request that a node forwards forward may be different from the request that the node receives from the downstream, because the flow control mechanism is likely to modify the flow description; In addition, from the industrial class WCDMA router, it is possible to merge and forward the reservation of the same sender.
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