3Wire RS2MQTT/RS2MQTT+ | 4G MQTT Gateway: 马来西亚的首选 Saturn Pyro Sdn Bhd

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Introduction

3Wire RS2MQTT & RS2MQTT+ are industrial-grade 4G IoT gateways designed to seamlessly connect serial and Ethernet-based devices—such as PLCs, meters, and sensors—to cloud-based IoT platforms.

Both models feature serial communication ports, while the RS2MQTT+ includes an additional Ethernet port to support TCP/IP-based data polling. These gateways enable reliable data transmission via MQTT or HTTP POST over 2G/4G (GPRS/LTE) networks.

Device configuration and data polling intervals can be easily managed through the serial interface. To ensure data integrity during network disruptions, the gateways are equipped with internal cache memory capable of storing up to 800 data records.

Additionally, both units are built with a dedicated watchdog circuit that ensures stable and continuous 4G operation, making them ideal for mission-critical industrial applications.

Features

Supports 3 Modes; TDD-LTE, FDD-LTE & GSM
Supports baud rate of 300bps ~ 921600bps, 5 ~ 8 data bits and parity can be “None”, “Odd”, “Even”, “Mark” & “Space”
Serial port interface for RS232 / 485; terminal block for RS485 and DB9 for RS232
Supports Serial Port Transparent Transmission, Modbus RTU to Modbus TCP & MQTT Protocol
Supports serial port AT Command configuration
Power+4G / Link / Active LED indicator
MQTT can be configured over the serial port
DTL-645 & Modbus RTU parameters can be polled and converted to JSON fomat
Upto 32 slaves connected on RS485 bus; with upto 200 parameters polled
Heartbeat & Keep Alive function ensures a reliable connection
Automatic discovery and configuration using provided 3Wire Device Management software
Wide voltage 9VDC ~48VDC; DC-Jack
Plug-in screw terminal wiring; accepts AWG12 ~AWG30 wires

General Specs
Interface	:	RS485/422: Terminal; RS232: DB9
Power Supply	:	5.5mm Plug & 2 Way Plugable Terminal Block
Dimensions	:	94mm (L) x 65mm (W) x 25mm (H)

Cellular
Supported Modes	:	4G CAT 1 Supports 2G & 4G B1 / B3 / B5 / B8 @ FDD LTE B34 / B38 / B39 / B40 / B41 @ TDD LTE B3 / B8 @ GSM
Transmission Rate (Maximum)	:	LTE : 10Mbps (downlink ) & 5Mbps (uplink) GPRS : 85.6Kbps (downlink) 85.6Kbps (uplink)
SIM Card	:	3V & 1.8V; Standard SIM
Antenna	:	50Ω / SMA Type

Serial Parameters
Baud Rate	:	300 ~ 921600bps
Data Bits	:	5 bits ~ 8 bits
Parity	:	None, Odd, Even, Mark, Space

Communication
Protocol	:	MQTT & HTTP Post
Conguration	:	3Wire Device Management Software

Power Requirement

924V DC80mA@12V 40mA@24V

Environment
Operation Temperature	:	-40°C ~ 85°C
Storage Temperature	:	-45°C ~ 125°C
Humidity	:	5 ~ 95% RH

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