Final configuration is confirmed in the quotation.
Multi-I/O Cellular RTU Gateway
Programmable cellular RTU for sites with many RS485, analog and digital signals — 3 RS485 ports, 12 analog inputs, 16 digital inputs, Ethernet, MQTT and relay control.
Start with the information you have. Exact model, interface and certificates are confirmed in writing before order.
Image details
Representative multi-I/O cellular RTU visual derived from a reviewed exact-model data sheet and independently de-identified. It is not the final ordered-model photograph; cellular module, frequency bands, I/O assignment, sensor-power outputs, storage, GPS, antenna, markings, cabinet and documentation are confirmed in the quotation.
Related solution: Equipment Monitoring
Where the hardware sits in the monitoring path
A planning view, not a fixed bundle. Signal type, protocol, power, network and the customer endpoint are confirmed before quotation.
Customer system
SCADA, BMS or customer-owned platform
Specifications
- Cellular uplink
- FDD / TDD 4G and HSPA / UMTS; module and bands selected for the target country
- Network interfaces
- 1 LAN, 1 WAN and 1 USB
- Serial interfaces
- 3 × RS485 plus 1 × RS232
- Digital I/O
- 12 dry-contact DI, 4 wet-contact DI (0-5V) and 2 relay outputs
- Analog inputs
- 12 × 4-20mA / 0-5V, 12-bit
- Protocols / functions
- MQTT, Modbus RTU, TCP/IP, HTTP / HTTPS, VPN and programmable local scripts
Show 2 more specification rows
How the model is selected
The written quotation ties the site requirement to one reviewed hardware configuration.
Site requirement
Application, medium, mounting and environment
Hardware configuration
Signal, protocol, power and enclosure
Quote confirmation
Model, quantity, certificates and delivery
Machine monitoring context
Representative site context. Sensors, interfaces, enclosure, power and mounting are confirmed against the actual project before quotation.
Model-selection reference
Industrial Monitoring Hardware Catalog
Use this audited section to compare available hardware configurations. The representative website image is not an exact model photograph; the ordered configuration is confirmed in the quotation.
- Catalog section
- Gateways and communication management units
- SG-coded options
- 36
- PDF pages
- 22–27
Continue product selection
Compare adjacent hardware families for the same monitoring path. The final combination is checked against the project I/O, protocol, power and enclosure requirements.
How to choose
- List every RS485, RS232, analog, dry-contact, wet-contact and relay point; the value of this gateway is its high channel count, so the wiring schedule comes first.
- Match the cellular module and frequency bands to the destination country and operator, then confirm the SIM, antennas, Ethernet addressing, VPN and remote-management rules.
- Define MQTT or Modbus data ownership, polling, timestamps, local storage, offline behavior and the acceptance test before programming begins.
- Review the 7.5-32 VDC supply, sensor-power outputs, cabinet space, pluggable terminals, cable entries and ambient temperature with the panel builder.
Compatible with
- RS485 / Modbus field devices
- 4-20mA or 0-5V transmitters
- Dry- and wet-contact status inputs
- Ethernet and cellular networks
- MQTT or Modbus RTU data paths
Typical package
- Multi-I/O cellular RTU gateway
- Country-matched cellular module, SIM and antenna
- Selected RS485, analog and digital field devices
- 7.5-32 VDC supply
- Cabinet or enclosure sized for the site and wiring
Applications
Use this gateway when one remote site has many mixed signals: serial instruments, 4-20mA or 0-5V transmitters, dry-contact alarms and relay-controlled equipment. It combines high-channel-count field I/O, Ethernet and a country-matched cellular uplink in one programmable RTU.
- Pump-station and water-site I/O collection
- Remote environmental or utility data acquisition
- RS485 meter and sensor aggregation
- Alarm input and relay output at unmanned sites
- MQTT or Modbus RTU handoff to the customer system
What to include in your quote request
- I/O list with RS485, RS232, analog, digital and relay points
- Target country, operator, SIM and cellular bands
- Ethernet / VPN policy and remote-management responsibility
- MQTT broker or Modbus destination, polling and payload / register map
- Offline storage, timestamps and acceptance test
- DC supply, sensor power, cabinet, antenna, quantity and project stage
Related selection guides
Related resources
Frequently asked questions
How many field signals can this cellular RTU collect?
The reviewed configuration has 3 RS485 ports, 1 RS232 port, 12 dry-contact digital inputs, 4 wet-contact digital inputs, 12 analog inputs and 2 relay outputs. The ordered terminal assignment and sensor-power outputs are confirmed in the wiring schedule.
Which analog signals does it accept?
The documented analog inputs accept 4-20mA or 0-5V signals with 12-bit conversion. Share each transmitter type, range and wiring method so the channel plan can be checked before quotation.
How does the gateway connect to the customer system?
The reviewed functions include Ethernet, cellular 4G / 3G, MQTT, Modbus RTU, TCP/IP, HTTP / HTTPS and VPN support. The modem, bands, SIM, broker or SCADA destination, payload and security responsibilities are selected for the project.
Can it keep working when the network is unavailable?
Optional local data storage and a real-time clock are documented for this product family. The required storage duration, timestamp behavior and retransmission test must be agreed before the hardware configuration is released.
What should I provide when requesting a quote for the Multi-I/O Cellular RTU Gateway?
I/O list with RS485, RS232, analog, digital and relay points; Target country, operator, SIM and cellular bands; Ethernet / VPN policy and remote-management responsibility; MQTT broker or Modbus destination, polling and payload / register map
Where can I compare available model options?
Open the Industrial Monitoring Hardware Catalog linked on this page. It lists audited SG-coded selections; the ordered configuration is confirmed in the quotation.
Will it work with my existing system?
Compatibility is reviewed against your field signals, protocols and upstream platform. Typical pairings include RS485 / Modbus field devices, 4-20mA or 0-5V transmitters, Dry- and wet-contact status inputs.