制造商自1999年起
Manufacture Since 1999
Compare E-Lins industrial routers by connectivity, interfaces, features and deployment requirements.
Find the right gateway based on interfaces, protocols, connectivity, and deployment requirements.
Select cellular modems by network generation, regional bands, interfaces, and integration requirements.
Choose the right switch by port count, PoE requirements, uplink options, and industrial deployment conditions.
Integrate controllers with industrial devices, communication protocols, and remote management platforms.
Compare devices by mobility, network speed, coverage, Wi-Fi capability, and deployment requirements.
Support hardware integration, software development, connectivity, and customized embedded solutions.
Monitor connected devices, manage configurations, and maintain your distributed network from a centralized platform.
Find compatible accessories by product model, connector type, mounting method, and deployment requirements.
Work with E-Lins engineering teams from product requirements and prototyping through validation and production.
Industrial 4G LTE and 5G connectivity products for reliable remote access, IoT networking, and mission-critical applications.
Industrial networking and control products designed to connect, manage, and integrate machines, devices, and field systems.
From product customization and industrial interfaces to firmware, hardware design, validation, and mass production support.
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
Explore technical perspectives, product demonstrations, white papers, webinars, and industry developments from E-Lins.
The E-Lins H685frc 5G RedCap industrial router with RS232 is a compact and reliable wireless networking solution designed for industrial communication and remote device management. Powered by advanced 5G RedCap technology, it provides efficient, low-power, and cost-effective cellular connectivity for industrial IoT and automation applications.
With integrated RS232 serial communication support, the H685frc operates as a dependable industrial RS232 router for connecting PLCs, legacy serial devices, industrial controllers, and monitoring equipment to cloud platforms and remote control systems. As a versatile serial to cellular router, it enables seamless wireless data transmission between serial devices and cellular networks.
The router is also ideal as an RS232 cellular router for SCADA systems, industrial telemetry, vending machines, kiosks, smart utility systems, and remote equipment monitoring. Supporting stable industrial-grade networking and secure VPN communication, the H685frc ensures reliable connectivity in demanding environments.
Designed for industrial automation and machine-to-machine communication, the H685frc serves as a high-performance industrial serial router, PLC serial router, and SCADA serial router for applications requiring secure and continuous remote serial communication.
Multi-carrier 3G/4G LTE/5G support with SIM card slot; Cellular/WAN RJ45/Wi-Fi client failover and Load Balance (Bandwidth link bonding); Supports LTE Advanced with SIM-based auto-carrier selection; Cloud-managed (with NMS network management system), TR-069, Web management, SMS, SSH/Telnet/Command, SNMP; Wi-Fi (802.11 a/b/g/n or 802.11ac, 2.4Ghz or dual band 2.4Ghz/5Ghz); Built-in transient and reverse polarity voltage protection, over-current and over-voltage protection; 5-40V DC voltage input range (5-60V DC option), Dual Power Inputs / Power Failover; GPS / Beidou support; Serial Port; DI/DO port * 4; Supports Ethernet (T1, DSL, Cable, MetroE), Wi-Fi as WAN, and Metro Wi-Fi; Ruggedized to ensure always-on connectivity; Create real-time alerts to monitor uptime; Offer secure, guest Wi-Fi to passengers; Advanced security, VPN, and stateful firewall to protect sensitive data; Robust Metal Case is ruggedized for vibration, shock; Desktop, Wall-mount and DIN-Rail mount of installation; External antenna connectors for high gain antennas replacement; MIMO supported;
H685frc 5G router with Ethernet is industrial designed, excellent function to ensure 7x24h running in stability and reliability;
Wide range power input with dual types of input supported; Alloy-metal case, IP30 protection standard;
Quality industrial grade casing provides robust and reliable 5G router for installation in many different environments and operating temperature of -35 Celcius to +75 Celcius.
The H685frc can built-in industrial class radio modem module to provide robust and reliable cellular network communications. With SIM Card Slot, users can insert a SIM to dial-up 3G/4G/5G networks directly.
H685frc 5G router external antenna offers more VPN safety application schemes, data transmission reach to financial grade standard E-Lins wireless routers support APN/VPDN private networks, also including various VPN access such as IPSEC, PPTP, L2TP, GRE,OPENVPN, Wireguard, DMVPN, etc. including the function of VPN client and server. Add one more channel of encryption communication under the base of special network can fully guarantee the safety and accuracy of data of dealing and management.
The H685frc smart 5G Router supports wide voltage range of 5V to 40V DC (option up to 60V DC) and has two power inputs so if the primary power fails then the modem will automatically use the second power supply without link downtime.
Supporting Web GUI, Telnet, SSH Command, SMS, TR-069, SNMP, and NMS (E-Lins Network Management System), users can manage and control the H685frc 5G router external antenna easily and flexibly.
All E-Lins communication terminals can be connected to the E-Lins remote managing and controlling platform (NMS), which brings the generous devices scattering in different areas to carry out concentrate monitor, configuration, updated, diagnose, maintenance, manage and control. Highly reduce the maintenance costing in the operator, integrator, devise supplier etc, increase the managing efficiency.| H685frc-RS232 This Model | H820t-P1 | H685t | H900tt-P1 | |
|---|---|---|---|---|
| Product Type | Indoor | Indoor | 室内 | Indoor |
| Cellular Connectivity | - | Cellular | 蜂窝网络 | Cellular |
| Connectivity Type | 5G RedCap | 4G LTE | 4G LTE | 4G LTE |
| Ethernet Ports | 2 EH Ports | 5 EH Ports | 2 个 EH 端口 | 5 EH Ports |
| SIM Card | Single SIM | Single SIM | 单卡 | Dual SIM |
| Ethernet Speed | 10/100/1000Mbps | 10/100Mbps | 10/100Mbps | 10/100/1000Mbps |
| PoE | Active PoE In | Active PoE In/PoE PD | 无源PoE输入 | Active PoE In/PoE PD |
| Wi-Fi | No Wi-Fi | No Wi-Fi | 无Wi-Fi | Wi-Fi 6 |
| SFP Port | No SFP | No SFP | 无SFP | No SFP |
| Serial | RS232 | No Serial | RS232 | RS232 |
| Features | Single SIM/Active PoE In | Single SIM/Active PoE In | 单 SIM/无源 PoE 入口 | Dual SIM/Active PoE In/eSIM |
| Industrial Protocols | Modbus/DNP3 | Modbus/DNP3 | MODBUS/DNP3 | Modbus/DNP3/eSIM |
| Network Protocols | MQTT/TCP/UDP/IPv4/IPv6/DNS/HTTP/NTP/ICMP | TCP/UDP/IPv4 | MQTT/ TCP/ UDP/ IPv4/ IPv6/ DNS/ HTTP/ NTP/ ICMP | MQTT/TCP/UDP/IPv4/IPv6/DNS/HTTP/NTP/ICMP |
| Operating System | Linux | Linux | Linux | Linux |
| Power Socket | DC | DC | 直流电 | 3 PIN Jack |
| Datasheet | H685frc-RS232 ↓ | H820t-P1 → | H685t → | H900tt-P1 → |
PDF · EN · v3.2 · 1.8 MB · Updated 2026-03
elins-h685frc-rs232-datasheet-v3.2.pdf
PDF · EN · SIM install, first login, APN setup in 10 minutes
elins-h685frc-rs232-quick-start-guide-v1.4.pdf
PDF · EN · 4.6 MB — full Web UI, CLI and network feature reference
elins-h685frc-rs232-user-manual-v2.8.pdf
PDF · EN · mounting, grounding, antenna & power wiring
elins-h685frc-rs232-hardware-installation-guide-v1.2.pdf
PDF · EN · cellular module AT commands, signal queries, SMS control
elins-h685frc-rs232-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-h685frc-rs232-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 → H685frc-RS232 · 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
Standard lead time 2-4 weeks. All variants share the same H685T hardware platform with factory-fitted options. OEM/ODM customization (firmware, branding, enclosure) available from MOQ 1 unit for evaluation — production branding from 50 units. Reply within 4 hours.
| Model No | Network | Interfaces |
|---|---|---|
| H685frc | 5G RedCap/4G/3G/2G |
2 x GE
1 x SIM
1 x Reset
4 x Cell
4 x DI/DO
|
| H685frc-W | 5G RedCap/4G/3G/2G |
2 x GE
1 x SIM
1 x Reset
4 x Cell
2 x Wi-Fi
4 x DI/DO
|
| H685frc-W6 | 5G RedCap/4G/3G/2G |
2 x GE
1 x SIM
1 x Reset
4 x Cell
2 x Wi-Fi
4 x DI/DO
|
| H685frc-W-RS232 | 5G RedCap/4G/3G/2G |
2 x GE
1 x SIM
1 x Reset
4 x Cell
2 x Wi-Fi
1 x RS232
4 x DI/DO
|
| H685frc-W-RS485 | 5G RedCap/4G/3G/2G |
2 x GE
1 x SIM
1 x Reset
4 x Cell
2 x Wi-Fi
1 x RS485
4 x DI/DO
|
| H685frc-W-G | 5G RedCap/4G/3G/2G |
2 x GE
1 x SIM
1 x Reset
2 x Cell
2 x Wi-Fi
1 x GPS
4 x DI/DO
|
| H685frc-W-D60 | 5G RedCap/4G/3G/2G |
2 x FE
1 x SIM
1 x Reset
4 x Cell
2 x Wi-Fi
4 x DI/DO
|
| H685frc-W-DIO | 5G RedCap/4G/3G/2G |
2 x GE
1 x SIM
1 x Reset
4 x Cell
2 x Wi-Fi
4 x DI/DO
|
| H685frc-P1 | 5G RedCap/4G/3G/2G |
2 x GE
1 x SIM
1 x Reset
4 x Cell
2 x Wi-Fi
4 x DI/DO
|
Send your configuration and quantity — our sales engineers reply with a formal quote within 4 business hours. Samples ship worldwide from Shenzhen.
100+ distribution partners across Europe, Asia, the Middle East and the Americas hold stock and provide first-line support in your time zone.
Firmware, branding, enclosure, band sets and packaging tailored to your project — customization available from MOQ 1 unit for evaluation.
Standard pricing — order samples directly to validate your application.
Contact sales for volume discount and project pricing.
OEM pricing, custom firmware / branding and dedicated support included.
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 H685FRC-RS232 platform.
The E-Lins H685frc IoT 5G RedCap router with Ethernet is a compact, ruggedized 3G/4G LTE/5G cellular networking solution designed for mission-critical connectivity in the most challenging environments. It is qualified for IoT (Internet of Things) and In-Vehicle applications. Super mini size suitable for embedding applications.
5G technology is the central of future technologies and world’s industries; 5G Redcap is a new choice for all 5G IoT solutions. The E-Lins H900frc 5G router with Gigabit Ethernet is a compact, ruggedized 3G/4G LTE/5G cellular networking solution designed for mission-critical connectivity in the most challenging environments. It is qualified for IoT (Internet of Things) and In-Vehicle applications. Super mini size suitable for embedding applications.
5G technology is the central of future technologies and world’s industries; 5G Redcap is a new choice for all 5G IoT solutions. The E-Lins H820frc 5G router is a compact, ruggedized 3G/4G LTE/5G Redcap cellular networking solution designed for mission-critical connectivity in the most challenging environments. It is qualified for IoT (Internet of Things) and In-Vehicle applications. Super mini size suitable for embedding applications.
The E-Lins H685frc IoT 5G RedCap GPS router with Ethernet is a compact, ruggedized 3G/4G LTE/5G cellular networking solution designed for mission-critical connectivity in the most challenging environments. It is qualified for IoT (Internet of Things) and In-Vehicle applications. Super mini size suitable for embedding applications.
IN THE BOX & ADD-ONS
Genuine E-Lins accessories tested with the H685FRC-RS232: 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 H685FRC-RS232 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 H685frc 5G RedCap router with RS232 is a compact industrial cellular router designed for serial communication and industrial automation applications. Supporting RS232 connectivity, remote device management, and stable 5G RedCap networking, it is ideal for PLC, SCADA, telemetry, and industrial IoT deployments.
