Description

Superior Performance with Flexible Networking

Supports global 2G/3G/4G networks and private network access with APN/VPDN. It can switch between 4G/3G/2G modes with automatic cellular network detection.

Failover support ensures uninterrupted data transfer. 2.4 GHz WiFi allows additional device access and supports wired/wireless Internet connections. It offers optional 5.8 GHz WiFi compatibility. This offers flexibility and expandability to its users.

Rich Hardware Interface for Multiple Scenarios

1-RS232/RS485 provides data transparent transmission with 2-DI switch input and

2-DO control output, realizes ModbusRTU and ModbusTCP conversion.

Abnormal Alarm, Always Monitoring

It monitors the status of routers in real time and sends SMS and email alarms immediately when abnormalities occur. It can also operate DO relay for emergency stop, which greatly ensures safety.

Easy Assembly and Installation

Suitable for industrial environments with both DIN Rail and rack mounting.

RLTK451 5-Port 4G Industrial Router

Product Details

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5 Port 4G Router

Improves network switching efficiency and ensures network stability. It strengthens network security and provides an uninterrupted internet experience by preventing broadcast storms. With these aspects, the network becomes more resilient, data is more secure and operation processes proceed more efficiently.

Serial Ports for Industrial IoT Integration

RLTK451 fully supports common VPN protocols including PPTP, L2TP, IPSec, OpenVPN and GRE; Multiple high encryption methods ensure data is transmitted in a financially secure manner.

Multi-Port Industrial Cellular VPN Router

It is a full-featured LTE/VPN router designed for mission-critical IoT applications with intelligent software functions and industrial-grade design.

It is suitable for various M2M and industrial IoT applications such as Smart Grid, Automation, Digital Manufacturing, Transportation, ATM, Smart Factories, Solar Power, Wind Power Generation, Smart Medical Care.

4 x LAN ports, 10/100 Mbps, compliant with IEEE 802.3, IEEE 802.3u standards, supports automatic MDI/MDIX, 1.5KV network isolation transformer protection.

Supports firewall, NAT, DMZ, blacklist whitelist.

Design for Industrial Environments

Support VPN (PPTP, L2TP, IPSec, OpenVPN, GRE) and VPN encryption function.

Ethernet, Wi-Fi, RS232/RS485, 2 x DI/DO Interfaces

VPN: Secure Data Transmission with PPTP, L2TP, IPSec, GRE, Openvpn

Industrial Robustness and Reliability

The RLTK451 4G LTE/VPN Router features industrial-grade design with a robust case and IP30 protection, and a wide operating temperature range. It also offers high-speed connectivity in harsh environments.

Flexible Protocol and Multi-Center Support

The serial modem supports user-defined register, heartbeat packets and transparent TCP/UDP protocol multi-center.

VPN and Security Encryption Solutions for Various Network Scenarios

Support VPN (PPTP, L2TP, IPSec, OpenVPN, GRE) and VPN encryption function, suitable for various network and high security requirements scenarios.

Connect to Various Apps without Complexity!

RLTK451 4G wireless router makes the network wirelessly accessible; it provides network for wireless devices, Ethernet devices, sensors, switch control, etc. It can also extend network services to more devices with switch and serial device server.

4G Power in Smart Agriculture!

In the 4G industrial router-based smart farming solution, environmental information collected by sensors is reported to the irrigation system server through the DTU function and GPS data and location information is reported. The liquid level and soil moisture levels are used to determine whether to run the irrigation system to ensure precise irrigation.

Smart Store Solutions

The IP camera installed in the store sends real-time video to the monitoring center via wired connection to RLTK451. The access control switch and infrared switch are connected to the DI input of the router to check the intrusion status, while the DO output is used to control the automatic alarm. This information is sent to the mobile phones of the management staff via text message. As the basic network driver for stores' security, RLTK451 provides protection.

Hardware Features:

RLTK451 4GRouter

Cellular Interface
Frequency	TDD-LTE: B38/B40/B41 FDD-LTE: B1/B3/B5/B7/B8/B20WCDMA: B1/B5/B8GSM/GPRS/EDGE: B3/B8
Antennas	2 × SMA-K Connectors
SIM Slot	1 x (3 V/1.8 V) Standard 2FF SIM, drawer-type sim card slots

Ethernet Interface
WAN	1 x WAN port 10/100 Mbps, compliance with IEEE 802.3, supports auto MDI/MDIX, 1.5KV network isolation transformer protection
LAN	4 x LAN ports, 10/100 Mbps, compliance with IEEE 802.3, IEEE 802.3u standards, supports auto MDI/MDIX, 1.5KV network isolation transformer protection

Indicators
PWR	RED – Always on after powered on
WORK	GREEN – Blinking when the router is ready and working properly
WLAN	Always on when WiFi is enabled and working properly
NET	Always on after connection: RED – 2G GREEN – 3GORANGE – 4G
SIG	Strongest signal reception when 3 solid bars

Terminal Block Pinouts
V+ V-	2 cores terminal power supply socket, built-in power supply phase-reversal protection.
GND	Ground Terminal
Tx/B RS232/RS485 Pin	Setup by software
Rx/A RS232/RS485 Pin	Setup by software
DI	2 x Digital Input, passive switch
DO	2 x Digital Open Collector Output, max Output 36 V / 300 mA
COM	Common Terminal used with DOs

Wi-Fi Interface
Antennas	2 × RP-SMA-K Connectors
Standards & Frequency	IEEE 802.11b/g/n, 2.4GHz, AP mode
Data Speed	IEEE 802.11b/g, maximum 54Mbps. IEEE 802.11n, maximum 150Mbps
Transmission Distance	80 meters when direct line of sight exists. Actual transmission distance depends on the environment of the site.

Power Supply
Adapter	12V 1A DC
Connector	DC Power Jack Barrel Type Female 5.5*2.1mm Round socket or industrial terminal block Reverse polarity protection
Supply Voltage	9 – 36 V DC
Power Consumption	Average current 522 mA @ 12 V Maximum current 811 mA @ 12 V

Serial Interface
Port Count	1 × RS485/RS232 (default RS232)
Connector	Industrial Terminal block
Baud Rate (bps)	1200, 2400, 4800 ,9600, 19200, 38400, 57600, 115200, 230400
Port Pins	RS232: TXD, RXD, GND RS485: A, B, GND
Data Bits	8
Stop Bits	1, 2
Parity	NONE, ODD, EVEN

Physical Specifications
Casing Material	Metal shell, IP30
Dimensions	125.0 x 103.0 x 45.0 mm (L x W x H). Terminal block, antenna pedestal and DIN rails connectors are not included.
Installation	Ear mounting. DIN-Rail mounting
EMC	Static IEC61000-4-2, level 3 Pulsed Electric Field IEC61000-4-4, level 3Surge IEC61000-4-5, level 3
Operating Temperature	-20°C — 70°C
Storage Temperature	-40°C — 125°C
Relative Humidity	5% — 95% (Non-Condensing)

Miscellaneous
Pinhole Button	Restore factory defaults Firmware resumeFirmware upgrading with USB
TBD	Debug Interface (TTL Level)
USB	Firmware upgrading
TF	TF Card Slot
Ground Protection	Screw
Built In Watchdog	Device runs self-detection, auto recovers from malfunctions
Certificate	CE

4.2 Software Specifications
Network Connection
WAN Protocol	PPP, PPPoE, DHCP Client
LAN Protocol	ARP, DHCP Server, NAT, VLAN
4G Network Access	Auto APN/VPDN, private network Access authentication: CHAP/PAP
WLAN Security	Open system, WPA/WPA2 PSK TKIP/AES encryption
IP Routing	Static Routing
Network Diagnosis	Ping, Route Trace, DNS

Serial Modem
Work Mode	NET, HTTPD
Sockets	4 sockets, 4 centers, TCPS(SOCKA)/TCPC/UDPS/UDPC
Modbus RTU to TCP	Supported

DI/DO
Events	SMS, E-Mail

Device Management
Configuration	Web
Remote Management	SSH, AT command,SNMP,SMS
FAST IoT Platform	Remote monitoring, remote upgrade, alarming, base station location, remote access to web pages of the router

Security
Failover Backup	Failover between 4G and WAN, ensures automatic switch to alternative backup connection
Firewall	DMZ, anti-DoS, Filtering (IP/Domain name/MAC address), Port Mapping, Access Control
VPN	Supports PPTP, L2TP, GRE, IPSEC VPN (IKEv1), OPENVPN protocols

Service
DDNS	Remote access the device through domain name
Alarm	Email, SMS, DO
Others	NTP client Timing taskUSB firmware upgradeUser defined indicator
Frequency	TDD-LTE: B38/B40/B41 FDD-LTE: B1/B3/B5/B7/B8/B20WCDMA: B1/B5/B8GSM/GPRS/EDGE: B3/B8

Real IoT Use Cases

Explore real IoT hardware use cases, get inspiration and experience for your project.