Производитель с 1999 года
Manufacture Since 1999
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Connect distributed devices, industrial systems, and remote infrastructure with secure cellular networking, edge connectivity, and centralized management.
Real deployments from Smart City, Energy, Industrial Automation, Transportation, and Mining, measured in uptime, savings, and ROI.
500+ deployments
150+ countries
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Brief The E-Lins industrial routers have been specially designed to be installed in extreme environmental conditions such as exterior racks, urban elements (street lights, information screens, bus stops, etc.), industrial warehouses, production lines, vehicles, exterior telesurveillance systems, etc. Highly resistant elements have been used to design and manufacture these industrial routers, both electrically as well as mechanically and resistance to extreme temperatures has been priorized by using low consumption components and increasing ventilation. E-Lins has developed an industrial wireless modem M300. This industrial 2G/3G/4G modem possesses specific characteristics which has enabled it to comply with the demanding requirements impossed by the utilities market (suppliers of Electricity, Gas, etc.), hence making it compliant with most industrial router scenarios.
What This Product Does
Get and share the freedom of 2G/3G/4G! The M300 2G/3G/4G Wireless Modem allows users to get mobile 2G/3G/4G broadband connection with machines nearly anywherein 2G/3G/4G coverage. Insert a SIM/UIM card (some networks flash the SIM/UIM card into the router), with simple configuration, a cellular broadband connection is created.
Tests in the Field-High Compatibility Compatibility is the most important aspect to consider when you're selecting a 2G/3G/4G modem. To ensure the best compatibility, E-Lins has made certain that our 3G/4G Modems are compatible with the ISPs in the regions in which they are sold. We have teams around the globe continually testing our Routers with the networks and carriers to ensure that end users can feel confident that their routers will operate flawlessly where they live and work.
Highlights Compatible with LTE(FDD, TDD) and 3G/2G networks networks (depends on networks), tested in the field (refer to datasheet for details). Main: Built-in 2G/3G/4G industrial cellular module, insert SIM/UIM card to work directly; Built-in sim card slot; Broadband M2M communications SIM failover/standby APN 2G/3G/4G failover for fixed line broadband connections Rapid service deployment applications Support At command USB port MIMO support (option) GPS support (option) Option feature: 1) MIMO Cellular diversity receiving (with this feature, router can get better signal and speed); 2) GPS feature
Industrial Application Remote Data Monitor and Control CCTV, security surveillance Water, gas and oil flow metering and schedule AMR (automatic meter reading) Power station monitoring and control Remote POS (point of sale) terminals, ATM, Traffic signals monitor and control, Traffic info guidance Oil field, weather forecast, environmental protection, street lamp monitoring and control Early Warning of Mountain Torrent Fleet management Power distribution network supervision Central heating system supervision Weather station data transmission Hydrologic data acquisition Vending machine Telemetry, SCADA Vehicle logistics and diagnostics controlling Parking meter and Taxi Monitor Telecom equipment supervision (Mobile base station, microwave or optical relay station) etc.
| M300t 4G Modem This Model | H720 Dual SIM 4G CAT9 Router | H685frc-RS232 | 6 Port 100M AI PoE Switch | |
|---|---|---|---|---|
| Product Type | - | - | Indoor | - |
| Connectivity Type | - | - | 5G RedCap | - |
| Ethernet Ports | - | - | 2 EH Ports | - |
| SIM Card | - | - | Single SIM | - |
| Ethernet Speed | - | - | 10/100/1000Mbps | - |
| PoE | - | - | Active PoE In | - |
| Wi-Fi | - | - | No Wi-Fi | - |
| SFP Port | - | - | No SFP | - |
| Serial | - | - | RS232 | - |
| Features | - | - | Single SIM/Active PoE In | - |
| Industrial Protocols | - | - | Modbus/DNP3 | - |
| Network Protocols | - | - | MQTT/TCP/UDP/IPv4/IPv6/DNS/HTTP/NTP/ICMP | - |
| Operating System | - | - | Linux | - |
| Power Socket | - | - | DC | - |
| Datasheet | M300t 4G Modem ↓ | H720 Dual SIM 4G CAT9 Router → | H685frc-RS232 → | 6 Port 100M AI PoE Switch → |
PDF · EN · v3.2 · 1.8 MB · Updated 2026-03
elins-m300t-4g-modem-datasheet-v3.2.pdf
PDF · EN · SIM install, first login, APN setup in 10 minutes
elins-m300t-4g-modem-quick-start-guide-v1.4.pdf
PDF · EN · 4.6 MB — full Web UI, CLI and network feature reference
elins-m300t-4g-modem-user-manual-v2.8.pdf
PDF · EN · mounting, grounding, antenna & power wiring
elins-m300t-4g-modem-hardware-installation-guide-v1.2.pdf
PDF · EN · cellular module AT commands, signal queries, SMS control
elins-m300t-4g-modem-at-command-reference-v1.6.pdf
ZIP · Web UI upgrade image + MD5 checksum. Changelog: fixes IPsec rekey race, adds MQTT over TLS, improves B41 cell reselection.
elins-m300t-4g-modem-firmware-v6.3.1.zip
ZIP · Batch configure, backup & restore multiple units over LAN
elins-config-tool-v2.1-win-linux-mac.zip
SNMP MIB, TR-069 notes and NMS open API — hosted on E-Lins Wiki
wiki.e-lins.com → M300t 4G Modem · API
ZIP · Declaration of Conformity and test reports
elins-certificates-ce-fcc-rohs.zip
PDF · Cloud network management for all E-Lins devices
elins-nms-platform-datasheet.pdf
Conforms to EU EMC, RED and LVD directives for sale in the European Economic Area.
↓ Download certificateFCC Part 15 compliant for the United States market; test reports available.
↓ Download certificateRestriction of Hazardous Substances — environmentally responsible manufacturing.
↓ Download certificate
CE · FCC · RoHS coverage — carrier testing in 60+ countries
= field-tested on live networks. The H685T uses TDD-LTE bands — verify your carrier's band plan (B38/39/40/41) before ordering; FDD regions are served by the H820 series.
Standard H685T units are not ATEX-rated. For oil & gas, mining and chemical sites in Zone 1 / Zone 2 hazardous areas, E-Lins offers certified enclosure packages and intrinsic-safety consultation through OEM projects. Contact our engineering team with your zone classification for a compliant configuration.
Need carrier approvals (PTCRB, AT&T, Verizon), ATEX or other regional certifications for your project? Contact us — certification-on-request is available for volume orders.
Datasheets, manuals, firmware & tools for the H685T
Guides, changelogs & tutorials on wiki.e-lins.com
Post-sales technical support — reply within 24 h
Monitor & manage your H685T fleet remotely
On all H685T hardware, from ship date
No-questions-asked returns on standard units
Security & feature updates for product lifetime
These are the questions we hear most often from engineers and integrators evaluating our products for their projects. Can't find your answer here? Our team is ready to help.
Technical support replies to pre-sales inquiries within 4 business hours.
The product supports TDD-LTE Band 38 (2600 MHz), Band 39 (1900 MHz), Band 40 (2300 MHz) and Band 41 (2500/2600 MHz), with fallback to TD-SCDMA (2010-2025 / 1880-1920 MHz) and EDGE/GPRS/GSM quad-band (850/900/1800/1900 MHz). Other TDD-LTE band combinations are available on request - see the datasheet for the full band list.
Yes - the product is carrier-unlocked and accepts any standard SIM/UIM card. APN is auto-detected for most carriers. Before ordering, confirm your carrier operates TDD-LTE Bands 38/39/40/41; for FDD-LTE regions (most of Europe / the Americas), choose the H820 series instead.
Yes. With the RS232 or RS485 option, the router works as a serial-to-cellular DTU gateway, transparently tunneling Modbus RTU traffic from meters, PLCs and RTUs to your SCADA center over TCP/UDP. Configuration takes minutes in the Web UI.
Insert an activated SIM, connect power (5-40 V DC - 12 V / 24 V cabinet and vehicle supplies work directly), attach the antenna, and the router registers on the network within about a minute. Default Web UI is at 192.168.8.1; APN, failover and VPN are configured in a guided flow. Most sites go from unboxing to online in under 10 minutes.
Yes - the compact metal enclosure is designed for street cabinets, pole boxes and control panels, with a -35 °C to +75 °C wide-temperature design and enhanced ventilation. Wall-mount and DIN-rail kits are available as accessories; the Hardware Installation Guide covers grounding and wiring.
Yes. The product supports three-way failover between 4G/3G/2G cellular, wired WAN (xDSL via RJ45) and Wi-Fi client mode. You can choose cellular-preferred or WAN-preferred backup strategies, and a built-in watchdog automatically restarts the link if the connection drops - an always-online design.
Yes - a full VPN suite: PPTP, L2TP, IPsec and GRE, with IPsec PKI digital certificates and extended authentication for compatibility with third-party VPN concentrators. IP/MAC filtering and an SPI firewall protect against DoS attacks.
All E-Lins routers integrate with the E-Lins NMS cloud network management system - remote monitoring, bulk configuration, firmware upgrades and alerts. SNMP (MIB-II + private MIB), Telnet, SSH2, Web UI and SMS status control are also built in. Learn about NMS →
Yes - firmware updates run over the Web UI, via the Configuration Tool over LAN, or in bulk through E-Lins NMS for entire fleets. Dual-image fallback means a failed update never bricks a remote unit; the step-by-step procedure is documented on the Wiki.
Every product carries a 5-year limited hardware warranty, a 30-day return policy on standard units, and lifetime firmware updates. Extended warranty and advance-replacement SLAs are available for volume and OEM projects.
Yes. E-Lins has provided OEM/ODM services since 1999: custom firmware, branding, enclosure and feature options (RS232/RS485, GPS, SMS/voice control, RIP/OSPF/BGP, PoE). Evaluation customization starts from a single unit; production branding typically starts at 50 units.
Standard models have no MOQ — order one sample to validate your application. Standard lead time is 2-4 weeks depending on options and quantity; volume pricing starts at 10 units, OEM pricing at 50+. Request a quote and receive a formal offer within 4 business hours.
KEEP EXPLORING
Need Wi-Fi, 5G or an extended temperature range? These upgrades build on the M300t 4G Modem platform.
The M300 series 4G modem with sim card slot is a compact, ruggedized industrial wireless USB modem providing global wireless cellular network connectivity, where cellular signal available, with 4G/3G/2G fallback capabilities for ensured access to the internet and private networks anywhere for wireless M2M and IoT.
The M400 series Cellular Modem is a complete wireless data modem providing global cellular network connectivity; where cellular signal available, with 3G/2G fallback capabilities for ensured access to the internet anywhere, providing RS232/RS485/USB port option.
IN THE BOX & ADD-ONS
Genuine E-Lins accessories tested with the M300t 4G Modem: power, antenna, mounting and cabling.
Sample list — awaiting the accessory catalogue.
USE CASES · SOLUTIONS
See how system integrators deploy it across smart city, energy and transportation projects.
Cloud Platform · Included with E-Lins Routers
Monitor, configure and upgrade your entire fleet of M300t 4G Modem routers from one cloud dashboard: bulk operations, real-time alerts and API integration. Cloud SaaS or private on-premise deployment.
Knowledge Base · Documentation
Configuration guides, firmware changelogs and field tutorials. Full documentation lives on the E-Lins Wiki.
The E-Lins industrial routers have been specially designed to be installed in extreme environmental conditions such as exterior racks, urban elements (street lights, information screens, bus stops, etc.), industrial warehouses, production lines, vehicles, exterior telesurveillance systems, etc.
