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.
Appearance, connectors and included accessories follow the configuration confirmed in your quotation.
Ask for a sample or a small pilot. Availability, minimum quantity and sample charges depend on the selected model.
Price & delivery
Range, interface, accessories, quantity and destination affect the quote. Stock, lead time, freight, taxes and delivery terms need confirmation.
Warranty & support
Coverage, duration, exclusions and the fault-assessment process are confirmed for the quoted model before order.
Certificates & documents
Tell us the destination and required standard. We check the exact model, document revision and available evidence; a family listing is not certification.
Public documents describe this product family and selection options. Wiring, register maps and compliance documents must match the model and version selected for your order.
Industrial Monitoring Hardware Catalog PDF · English · 379 KiB File revision: 2026-07-22 · 85c5f07896ab
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Choose what you need. We first identify the model and revision, then confirm which documents can be supplied. The request does not imply that every document is available.
Public now
Public selection guidance and model-selection catalogue
Check for the selected model
Exact-model datasheet · Wiring / pinout · Register map, protocol or sample data · Model-specific certificates · Calibration and measurement evidence · Dimensions / installation drawing
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
I/O, protocol, antenna, power, enclosure and upstream platform are selected for the project.
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.
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. Use it to compare equipment options before requesting a configuration.
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.
Product-family reference. Final ordered model and specifications are confirmed in the written quotation.
