RG4000-E is 4G router for industrial IoT,  powerful but small size.

It supports a variety of VPN protocols to ensure secure connectivity and comes equipped with a relay output for enabling remote control.
This router facilitates seamless transmission of IoT data from industrial environments to the cloud, while also offering local data caching—with the ability to automatically resume uploads once network connectivity is restored.
Practical use cases include, but are not limited to, remote monitoring and control scenarios such as:
● Remote monitoring of generators at mining sites
● Tracking of engine vibrations on ships
● Wireless video surveillance 
● Remote monitoring of photovoltaic system（ a portable, off-grid lighting trailor powered entirely by solar energy）

Product Features
● 1x RS485/RS232 port, for Modbus polling IoT data
● support Modbus to MQTT, compatible to cloud platform
● 1 x relay output
● support edge computing, allows for local automation control
● 4G/LTE cellular module, compatible with 3G/2G network
● Dual SIM slot , avoid data transmission disconnect , auto-reconnect
● GPS optional , for tracking ships, trains, vehicles etc
● provide free software for devices batch management, both on-premise and cloud deployment.
● support various VPN (Virtual Private Network) and customization
● Built-in firewall, ensure network security
● router device size small, friendly to cabinet limited space
● particularly suitable for remote monitoring such as outdoors tower, lighting poles, pump rooms etc.

Hardware Specification

Software Features

● Support 2 Ethernet Ports of 10/100M, all ports support WAN/LAN; which can be divided arbitrarily
● Compatible 4G/3G/2G network
● Support various network protocols: TCP/IP, UDP, HTTP, TELNET, ICMP, DHCP, PPPOE, DNS, DDNS etc;
● Support static routing and dynamic routing protocols such as RIP/OSPF;
● Supports QoS protocols such as priority mapping, traffic policing, traffic shaping, congestion management, and speed limiting;
● Support ACL, NAT function;
● Support firewall, packet filtering, URL filtering and other functions;
● Supports configuration of VPN such as GRE, L2TP, IPSEC, OpenVPN, VXLAN, etc.;
● Support 802.1Q VLAN;
● Supports link detection functions such as BFD and DLDP, it can switch to back-up link quickly according to detective result;
● Support log function.
● Support Centralized network management of CLI, WEB and SNMP/TR069;
● Supports version upgrade and rollback functions.