China OEM Wireless 4G LTE Router Cellular Router














H685m Series 4G LTE Router


The H685m series Cellular Router is newly published 2G/3g/4G router with mini smart size 87mm*50mm*23mm, specially designed for industrial application. Durable, flexible, and user-friendly feature is widely used for different kinds of high data transmission applications. With such size, customers can put it inside their machines easily.
Designed for establish a cellular broad band Internet connection. The H685m series Cellular Router enables users to quickly create a secure wireless network and provide access to the Internet using a cellular network. By connect to cellular network; an Internet connection can be accessed and shared virtually anywhere within a wireless broadband network.


>>| Hot Spot for H685m 4G LTE Router
Broadband M2M communications
SIM failover/standby APN
2G/3G/4G failover for fixed line broadband connections
Rapid service deployment applications
WiFi optional
DB9 port for RS232/RS485/TTL to Cellular Gateway
USB port for usb modem use
External antenna SMA socket
VPN (PPTP, IPSec supported)
Support At command
Support multi-LAN IP address (VLAN feature)
Always be online. Dynamic fresh network link to protect “fake link”.
Auto-dial feature, keep alive link
Built-in watch dog


>>| Features
1)Basic Features
Supports multi-band GSM, GPRS, EDGE, HSDPA, HSUPA, HSPA, HSPA+, 4G LTE network, and CDMA1x, CDMA2000 EVDO networks, and TD-SCDMA networks;
SMA Standard antenna;
Optimized EMC design;
Always on line: On-line detection and automatic redial and keep-alive while the line dropped;
Wide range power input;
Smart power management;
Reliable, flexible, easy to use and management;
RS-232/485/TTL interface transparent communication (DTU modem function) optional;
1 LAN RJ45 ports for Ethernet interface;
WiFi 802.11b/g/n optional;


2) Enhanced Features
Real-time clock
VPN (PPTP, IPSec) optional – Please confirm what VPN you require before order;
Built-in DHCP server;
Supports NAT and DMZ host;
Supports DNS proxy and Dynamic DNS (DDNS);
Supports Static routing table;
Supports packet filter;
Built-in multi-routing backup (Ethernet and dialup network);
System and network monitoring;
WAN interface traffic statistics;
Support multiple protocol conversion;
Transparent data transmission (DTU feature) optional;
WEB/Telnet/console management interface;
Support radio network data envelope counting;
Self-diagnostic and alarm output;
Local/remote profiles backup and retrieve;
Local/remote firmware upgrade via web;
Remote web management;
Urgent event alarm via SMS optional;
Firewall, packet filtering;
Support data center communication;
Support NTP;
Support LED status indication;
Support VLAN;
Support LCP, ICMP check;


3) Enhanced Features
Multi-level link detection and redial, keep the traffic channel alive
1. PPP detection
2. Local and remote ICMP detection
3. Heart-beat detection
4. WAN interface traffic detection

On/off line control
1. Auto or manual dial
2. Timing on/off line control

Flexible data communication
1. Supports layer 2 and 3 data communication
2. Supports RS-232/485/TTL transparent communication optional
UDP/IP or TCP/IP Client/Server
3. Supports both RS-232 and Ethernet communication

Configuration and remote management
1. Multi-language web based configuration interface (local or remote)
2. Supports Telnet local or remote operation
3. CLI operation

Virtual online technology(VKL, only CDMA)
1. Release wireless network channel while there is no user’s data traffic
2. Keep the router online logically when the wireless channel released
3. The router will immediately restore to the connected status without any redial or authentication if there is any data transmitted

H685m Series 4G LTE Router Industrial Application


1) Remote Data Monitor and Control;

2) CCTV, security surveillance;

3) Water, gas and oil flow metering and schedule;

4) AMR (automatic meter reading);

5) Power station monitoring and control;

6) Remote POS (point of sale) terminals, ATM,

7) Traffic signals monitor and control, Traffic info guidance;

8) Oil field, weather forecast, environmental protection, street lamp monitoring and control

9) Early Warning of Mountain Torrent;

10) Fleet management;

11) Power distribution network supervision;

12) Central heating system supervision;

13) Weather station data transmission;

14) Hydrologic data acquisition;

15) Vending machine;

16) Telemetry, SCADA;

17) Vehicle logistics and diagnostics controlling;

18) Parking meter and Taxi Monitor;

19) Telecom equipment supervision (Mobile base station, microwave or optical relay station)


What does it require if use a H685m series 4G LTE Router?

1. Device supports RJ45 LAN port;

2. A sim card supports 2G/3G/4G network;
3. 2G/3G/4G network signal is available in the site where the device is installed.



  • H685m Series Serial Router includes:


    A. Distinction by network type:


    GPRS version: works under GSM/GPRS networks;


    EDGE version: works under GSM/GPRS/EDGE networks;


    CDMA version: works under CDMA1x network;


    3G WCDMA HSDPA version: works under GSM/GPRS/UMTS/HSDPA networks;


    3G WCDMA HSPA version: works under GSM/GPRS/UMTS/HSDPA/HSUPA/HSPA/HSPA+ networks;


  • 4G LTE version: works under GSM/GPRS/UMTS/HSDPA/HSUPA/HSPA/HSPA+/4G LTE networks;


  • 3G CDMA2000 EVDO version: works under CDMA1x/CDMA2000 EVDO networks;


    Please refer the datasheet and confirm the right version before you order.



Typical Diagram for H685m Series Router

China OEM Wireless 4G LTE Router Cellular Router

Download - H685m Serial Router

H685m Series 4G LTE Router




For more Industrial Cellular Mobile Modems, please refer to Wireless_Modem_List


For non-industrial cellular mobile modems, please refer to USB Data Modem at




Model Selection - H685m Series

How to select the right version for H685m series cellular router?

Step 1) confirm the network type you will use.


Step 2) confirm your network band. (If you cannot confirm this step, get help with us)


Step 3) confirm the port you need. (RJ45, RS232 or RS485, USB port)


Step 4) confirm the option feature if you need. (WiFi feature, Serial to Cellular Gateway DTU feature,, GPS feature)


Step 5) contact our sales with confirmation for above. Better tell us some info of your application details. Our sales will help you to select the right one


Catalog - Router Modem AP


Industrial Class Series


SOHO Class Series

Appearance - H685m Series Router
Wireless Cellular 4G LTE Router with WiFi RS232 port Wireless Cellular 4G LTE Router with WiFi RS232 port

Compatible Mobile Networks:
CDMA EVDO Rev 0 and Rev A


Cellular Frequency
UMTS/HSPA/HSUPA/HSPA/HSPA+ (WCDMA/FDD) 850/1900/2100 MHz or 850/900/1900/2100Mhz optional
Quad-band EGSM 850/900/1800/1900
CDMA1x/EVDO: 800/1900Mhz or 450Mhz optional
700(B17)/AWS or 800/900/1800/2100/2600MHz or 700(B13)MHz


HSUPA/HSPA/HSPA+: Downlink 7.2Mbs or 14.4 Mbps or 21Mbps/42Mbps optional, Uplink 5.7Mbps
HSDPA: Downlink 7.2 Mbps, Uplink 384k bps
WCDMA/UMTS: Downlink/Uplink 384 kbps
EDGE: Downlink 236,8 kbps, Uplink 118 kbps
GPRS: Downlink 85.6 kbps, Uplink 42.8 kbps
CDMA1x: Downlink/Uplink 153.6kbps


Rev A: 3.1Mbps downlink, 2.4Mbps uplink
Rev O: 2.4Mbps downlink, 153.6kbps uplink
4G LTE: Downlink: 100Mbps, Uplink:50Mbps


DTU (Optional) With DTU feature (Serial to cellular gateway feature), RS232 or RS485 for option


At command supported


VPN Support IPSec, PPTP
Firewall Throughput Speed: 100Mbps
VPN encryption speed: 5M~200M bps
VPN channel: 100~5000
key switch arithmetic: diffie-hellman
HASH arithmetic: SHA-1 MD5
Authentication mode: Preshare key
VPN network type: support network-to-network Intranet
VPN machine access: Remote Access VPN


WiFi Optional 802.11b/g/n


VLAN Support multi-LAN IP address




Security support 64/128 bits WEP, 802.1x, WPA, and WPA2
support WDS
support WPA1/2 – PSK
support WPA1/2 – 802.1x
support access with user name & password.
support access control base WAN/LAN interface
support access control base source IP address
defense DOS attack, support SYN flooding, IP surfing, ping of Death, fragile, teardrop, land etc.
support PAP & CHAP
support IP filtering


Advanced Firewall Features Network Address Translation (NAT)
Stateful Packet Inspection (SPI)
VPN Pass-through


Media Access Control CSMA/CA with ACK


Certifications REDIUS Client


Interface & Others
Interface LAN: 1X 10/100M LAN port (RJ45 interface)
1X antenna for Wi-Fi (SMA interface) for WiFi version
1X antenna for cellular (50Ω SMA female interface)
USB: 1X USB 2.0 Host for modem use
Led: SYS, Cell, Link, LAN, VPN, WiFi
Serial port DB9 (optional) rate: 300~115200bps
Configuration interface: Web/Telnet
UIM/SIM Card Slot: Support 1.8V/3V UIM/SIM cards, one sim card slot


Power Power supply: DC5V-27V, typical DC9V1A
Power consumption: Idle: 250mA@9VDC
Average: 300mA@9VDC


Software Device Management: WEB interface (Internet Explorer v6 or Later; Mozilla Firefox v1.5 or Later, Chome,Opera,Sarafi or other Java-enabled Browsers)


Minimum System Requirements:
Mobile Internet Access Subscription and Internet PC Adapter
Computer with:
Windows 7, Vista , Windows XP SP2, Windows 2000 SP4, or Mac OS® X (v10.4/v10.3), Linux
Internet Explorer 6 or Mozilla Firefox
CD-ROM Drive
Network Interface Card
Physical Operating Temperature
Storage: 72°F to 153°F (-40°C to 90°C)
Working: 36°F to 126°F (-30°C to 80°C)


Humidity:95% Maximum (Non-condensing)


Item not including installation hole (L x B x H): 87mm*50mm*23mm
Item including installation hole (L x B x H): 102m*70mm*23mm
PCBA size: 84mm*48mm*20mm
Weight: Item 160g
Others Warranty: 2 Years


Package Contents:
The H685m Series wireless Router
CAT5 Ethernet Cable
Power Adapter
CD-ROM with Product Documentation
Others depends on the option features


Model Version Network Supported Band Interface Option
H685mg GPRS GPRS/GSM 850/900/1800/1900Mhz RJ45,USB RS232/RS485
H685me EDGE EDGE/GPRS/GSM 850/900/1800/1900Mhz RJ45,USB RS232/RS485
H685md HSDPA HSDPA/UMTS/EDGE/GPRS/GSM 850/900/1800/1900/2100Mhz RJ45,USB RS232/RS485, WiFi
H685mu HSUPA HSPA/HSUPA/HSDPA/UMTS/EDGE/GPRS/GSM 850/900/1800/1900/2100Mhz RJ45,USB RS232/RS485, WiFi
H685mp HSPA+ HSPA+/HSPA/HSUPA/HSDPA/UMTS/EDGE/GPRS/GSM 850/900/1800/1900/2100Mhz RJ45,USB RS232/RS485, WiFi
H685mt 4G LTE 4G LTE/HSPA+/HSPA/HSUPA/HSDPA/UMTS/EDGE/GPRS/GSM 2G/3G:850/900/1800/1900/2100Mhz, 4G: 700(B17)/AWS or 800/900/1800/2100/2600MHz or 700(B13)MHz RJ45,USB RS232/RS485, WiFi
H685mc CDMA CDMA1x 800/1900MHz RJ45,USB RS232/RS485
H685mev EVDO CDMA2000 EVDO/CDMA1x 800/1900MHz RJ45,USB RS232/RS485, WiFi
H685mtd TD-SCDMA TD-SCDMA/EDGE/GPRS 1900/2100MHz RJ45,USB RS232/RS485, WiFi