H685t
H685t Mini 4G嵌入式路由器（紧凑型尺寸）& SIM解锁
E-Lins工业路由器已特别设计用于安装在极端环境条件中，如外部机柜、城市元素（路灯、信息屏、公交站牌等）、工业仓库、生产线、车辆、外部监控系统等。
3D Model
Product Gallery
Introduction Video
The E-Lins H750 series dual sim 4g router is a compact, ruggedized 3G/4G/LTE and Dual SIM cellular networking solution designed for mission-critical connectivity in the most challenging environments. It is qualified for M2M (Machine to Machine), IoT (Internet of Things) and In-Vehicle applications.
With an extensive list of safety and hardening certifications, the H750 dual sim 4g router is engineered to protect against extreme temperatures, humidity, shocks, vibrations, dust, reverse polarity, and transient voltage, which is widely used in more than twenty industrial fields, such as CCTV security surveillance, vehicle, Telemetry, vending machines, power control, AMR, traffic, oil field, weather forecast, environmental protection, street lamp control, post, bank and many other areas.
Highlights
Multi-carrier 2G/3G/4G LTE support with Dual SIM card slot; Cellular/WAN RJ45/WiFi 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; WiFi (802.11 a/b/g/n, 2.4Ghz); Certified 3G/4G/LTE enterprise/industrial grade internal modems; Built-in transient and reverse polarity voltage protection; 5-40V DC voltage input range (5-60V DC option), Dual Power Inputs / Power Failover; POE (Power over Ethernet); GPS / GNSS support; Serial Port; DI/DO port * 4; TF (MicroSD card slot); Supports Ethernet (T1, DSL, Cable, MetroE), WiFi as WAN, and Metro WiFi; Ruggedized to ensure always-on connectivity; Create real-time alerts to monitor uptime; Offer secure, guest WiFi to passengers; Advanced security, VPN, and stateful firewall to protect sensitive data; Robust Metal Case is ruggedized for vibration, shock, provide IP30 protection; Desktop, Wall-mount and Din-rail mount of installation;
Multi SIM Working Mode
To further enhance the wireless M2M and IoT reliability, the H750 dual sim router load balancing has a second SIM Card slot so that you can insert two SIM cards to get different applications.
1) Failover
With this using, usually you can get two SIM Cards from different mobile network. One is the primary SIM, the other is backup SIM. In the event that the primary network becomes unavailable then the router will switch to the backup SIM card and use the alternative service provider.
2) Load Balancing and Link Bonding
Being a 4G Load Balancing Router, the H750 dual sim router load balancing can utilise the two embedded 4G modules, the RJ45 WAN and WiFi Client connections all at the same time and share these WAN connections with the LAN users.
With channel link bonding, the H750 4G dual sim router load balancing makes two or more links are combined for redundancy or increased throughput. Channel bonding is differentiated from load balancing in that load balancing divides traffic between network interfaces on per network socket (OSI model layer 4) basis, while channel bonding implies a division of traffic between physical interfaces at a lower level, either per packet (OSI model Layer 3) or a data link (OSI model Layer 2) basis.
E-Lins has a better industrial design
Industrial Design. Rubust and Working in Wide Range Temperature
H750 dual sim 4g router is industrial design, 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 4G router for installation in many different environments and operating temperature of -35 Celcius to +75 Celcius.
With Multi-Powerful-Features
Dual Modem and Dual SIM
The H700 multi sim 4G router can built-in single modem or dual modem for failover, load balancing and bonding applications. With two modems, the H700 multi sim 4G router can switch from main SIM card to backup SIM card without delaying to meet the reliable applications.
Rich Interface
VPN Safety and Securiy
H750 multi sim 4G router offer 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, 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.
Dual Power Input
The H750 Dual SIM 4G 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.
Three Types of Installation (Din-rail, wall-mount, Desktop)
GNSS / GPS is supported
Multi-management
Supporting Web GUI, Telnet SSH Command, SMS, TR-069, SNMP, and NMS (E-Lins Network Management System), users can manage and control the H750 dual sim router load balancing easily and flexibly. differentiate 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.Industrial Applications
- Remote data monitoring & control (SCADA / telemetry)
- CCTV & security surveillance backhaul
- AMR automatic meter reading — water, gas, oil flow
- Power station & distribution network supervision
- POS terminals, ATM & vending machines
- Traffic signal & street lamp monitoring
- Fleet management & vehicle diagnostics
- Hydrologic / weather station data acquisition
- Telecom base-station equipment supervision
Always-Online Failover
Cellular, wired WAN and Wi-Fi client back each other up automatically. When one link drops, traffic switches in seconds — your SCADA polling never notices.
Serial DTU for Legacy Devices
Optional RS232/RS485 port bridges Modbus RTU meters and decades-old controllers onto IP networks. No forklift upgrade — the serial device just gains a 4G link.
Full VPN Suite On Board
IPsec, L2TP, PPTP and GRE tunnels terminate directly on the router. Site data reaches your platform encrypted, without extra security appliances.
Built for Outdoor Cabinets
Wide-temperature components, enhanced ventilation and a compact metal body fit cramped street cabinets and survive them. Rated for −35 °C cold starts to +75 °C summer heat.
Self-Healing Watchdog
A hardware watchdog plus multi-layer link detection restarts frozen links before anyone calls you. Unattended sites keep working for years, not weeks.
Fleet Management via NMS
Every H685T reports signal, traffic and status to E-Lins NMS cloud. Push configs and firmware to one unit or ten thousand — from a single dashboard.
Typical Deployment Topology
RTU / PLC / Meter
Modbus RTU • Ethernet
existing field device
existing field device
RS485 / LAN
H685T Router
DTU gateway • VPN tunnel
failover & watchdog
failover & watchdog
4G TDD-LTE
4G Network
carrier network
B38/39/40/41
B38/39/40/41
IPsec / MQTT
Cloud Platform
SCADA center • E-Lins NMS
your IoT application
your IoT application
H750tt-W-RS232 in the E-Lins 4G Family
| H750tt-W-RS232 This Model | H820t-RS232 | H685f-P1 | H820QO 4G CAT9 CPE | |
|---|---|---|---|---|
| Product Type | Indoor | Indoor | Indoor | - |
| Cellular Connectivity | Cellular | Cellular | Cellular | - |
| Connectivity Type | 4G LTE | 4G LTE | 5G SA/5G NSA | - |
| Ethernet Ports | 3 EH Ports | 5 EH Ports | 2 EH Ports | - |
| SIM Card | Dual SIM | Single SIM | Single SIM | - |
| Ethernet Speed | 10/100Mbps | 10/100Mbps | 10/100/1000Mbps | - |
| PoE | Passive PoE In | Active PoE In/PoE PD | Active PoE In/PoE PD | - |
| Wi-Fi | Wi-Fi 4 | No Wi-Fi | No Wi-Fi | - |
| SFP Port | No SFP | No SFP | No SFP | - |
| Serial | RS232 | RS232 | RS232 | - |
| Features | Dual SIM/Passive PoE In | Single SIM/Active PoE In | Single SIM/Active PoE In | - |
| Industrial Protocols | Modbus/DNP3 | Modbus/DNP3 | Modbus/DNP3 | - |
| Network Protocols | MQTT/TCP/UDP/IPv4/IPv6/DNS/HTTP/NTP/ICMP | TCP/UDP/IPv4 | TCP/UDP/IPv4 | - |
| Operating System | Linux | Linux | Linux | - |
| Power Socket | DC | DC | DC | - |
| Datasheet | H750tt-W-RS232 ↓ | H820t-RS232 → | H685f-P1 → | H820QO 4G CAT9 CPE → |
KEEP EXPLORING
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IN THE BOX & ADD-ONS
Accessories Available
Genuine E-Lins accessories tested with the H750TT-W-RS232: power, antenna, mounting and cabling.
Sample list — awaiting the accessory catalogue.
4G LTE SMA Antenna (Standard)
High-Gain 4G Antenna 5 dBi
12V / 1.5A Power Adapter
DIN Rail Mounting Kit
RS232 Serial Cable (DB9)
RS485 Terminal Block Cable
9-36V DC Vehicle Power Cable
Wi-Fi Antenna 2.4 GHz
Magnetic-Mount 4G Antenna
SMA Extension Cable 3 m
Wall-Mount Bracket Kit
PoE Splitter (Passive)
USE CASES · SOLUTIONS
Solutions Built on the H750TT-W-RS232
See how system integrators deploy it across smart city, energy and transportation projects.
Free 30-Day Trial
Network Management
Cloud Platform · Included with E-Lins Routers
Network Management
System
Monitor, configure and upgrade your entire fleet of H750TT-W-RS232 routers from one cloud dashboard: bulk operations, real-time alerts and API integration. Cloud SaaS or private on-premise deployment.
Bulk firmware upgrades
Real-time alerts
Open API integration
Knowledge Base · Documentation
H750TT-W-RS232 on the E-Lins Wiki
Configuration guides, firmware changelogs and field tutorials. Full documentation lives on the E-Lins Wiki.
About the E-Lins H750TT-W-RS232
The E-Lins H750 series dual sim 4g router is a compact, ruggedized 3G/4G/LTE and Dual SIM cellular networking solution designed for mission-critical connectivity in the most challenging environments. It is qualified for M2M (Machine to Machine), IoT (Internet of Things) and In-Vehicle applications.