Signshine S3521 industrial GPRS Router 1x Lan is a wireless cellular router by using
GPRS network with industrial grade design and one Ethernet port and RS232
GPRS Ethernet Router adopts high-powered ARM9 processor and embedded with real
time operating system as software support platform, conveniently and transparently
connects one device to a cellular network, allowing you to connect to your existing serial
and Ethernet devices with only basic configuration.
This GPRS VPN Router has been widely used in M2M/SCADA field, such as power
automation, transportation,financial service terminal, factory automation, water, oil&gas,
large machine maintenance, environment,building automation, outdoor digital signage ect.

1.Industrial high-powered embedded 32 bits CPU, 320MHz;With 16KB Dcache, high-speed cache data, speed up data access speed with 16KB Icache, high-speed instruction cache, enhanced instruction processing speed.

2.Industrial high-powered cellular module

3.Real time OS Linux 6.2, with MMU and completely full TCP/IP protocol Strengthened PCB which follows the principle of 20H and 3W, and adopts health benefits material to ensure the product stability

4.Industrial grade rigorous screened components

5.Industrial power adapter, wide voltage power supply design, power range DC7-32V, reverse-voltage and overvoltage protection

6.Ethernet port:1.5KV magnetic isolation protection

1.Online maintenance patents:Intelligent anti-dropped, online test, online maintenance, Automatically restart to ensure that equipment is always online

2.Three-tier system protection, based on the system protection of software protection and WDT, It supports VWM (Virtual Man Watch)function

3.SIM/UIM port:1.8V/3V/5V standard putter user card interface 15KV ESD protection

4.Serial RS232 port:15KV ESD protection

5.Housing:Iron, providing IP30 protection, radiation protection, anti-interference, lightning protection design, special for outdoor harsh environmental application

6.All cellular modules are certified by CGD/CE/FCC certificate

7.High-speed processing CPU:ARM9 industrial-grade high-speed CPU, can higher speed handle a variety of protocol data transfer;Solve the "fake online", "fake death", "crash" and other difficult problems.

8.Large memory:FLASH64Mbits, SDRAM, 256Mbits, a large memory to cache data sent by customer, meanwhile receiving large packets, no data lose.

3.Support wireless video monitoring and dynamic image transmission

4.Supports Ethernet data communication and packet forwarding, also supports serial port TCP/UDP transparent data transmission or serial configuration

5.Support VPN tunnel, including PPTP, MPPE, L2TP, GRE and IPSEC

6.Intelligent anti-dropped, support online testing, online maintenance, automatic redial, router is always on-line

7.Support IPTABLES firewall, packet filtering

8.Support Regular on-line offline functionality, can set the device on-line and offline in a certain period of time

9.Support a variety of trigger and offline modes, including text messages, phone ringing, serial port data, network data trigger and offline mode

10.Support dynamic routing and static routing, RIPv1, RIPv2, OSPF, BGP, NDSP, IRMP, SNSP, IGMP, DVMRP, PIM-SM/DM

11.Support multiple protocols:TCP/IP, UDP, ICMP, SMTP, HTTP, POP3, OICQ, TELNET, FTP, etc.

12.Support DHCP/DHCPD functionality

13.Supports NAT port mapping function, such as SNAT, DNAT

14.Support DDNS(Dynamic Domain Name Server):Support ORAY, 88IP, and DYNDNS domain name service provider

16.Support the APN/VPDN network
17.Convenient WEB configuration, Remote WEB Management

18.Support WEB configuration save and restore to achieve the rapid deployment parameters backup and batch of equipment

19.Support telnet management, user-friendly console shell interactive environment

20.Support multiple terminals sharing router ppp wan