Industrial 8-Channel 4G LTE I/O Controller | MQTT Modbus Gateway

The Valtoris 8-Channel 4G LTE I/O Controller (8CH-IO-LTE) is engineered for off-grid telemetry. This cellular edge device consolidates 8 digital inputs, 8 analog inputs, and 8 relay outputs alongside an integrated RS485 serial gateway.

Part No. 8CH-IO-LTE
sku : IoT-RIC104
INSTANT QUOTE

Cellular Off-Grid Telemetry

This 8-Channel 4G LTE I/O Controller securely connects isolated field assets directly to your SCADA system or cloud. It actively monitors 8DI/8AI and controls 8DO using standard 4G LTE networks, eliminating the need for expensive trenching or micro-PLCs.

8-Channel 4G LTE I/O Controller Overview
Remote Cellular Data Acquisition

Consolidated I/O Density & Serial Gateway

The unit is equipped with a dedicated RS485 port and 24 channels of mixed I/O. It works as a transparent serial server and enables you to daisy chain third-party Modbus RTU devices (like flow meters) and send their data over cellular networks.

Supports 8-channel DI/DO/AI and RS485

Native MQTT & Modbus Protocol Support

It integrates natively with AWS, Azure and private IoT clouds. It natively supports conversion for MQTT, JSON, HTTP and Modbus TCP/RTU. There is no complex edge programming needed and JSON payloads are fully customizable.

Modbus and MQTT Protocol Flexibility

Peer-to-Peer (P2P) Control & Edge Logic

Use 4G to connect two devices and make a wireless P2P tunnel. A Digital Input fired on Device A opens the corresponding relay on Device B immediately. It also provides for local active reporting of critical alarm conditions.

Peer-to-Peer DI to DO Control over 4G

Comprehensive Diagnostic Indicators

Front panel LEDs provide immediate visual feedback for 4G link stability, Modbus data flow, and relay status, simplifying on-site diagnostics.

Rich Indicator light for status monitoring
Detailed LED Diagnostic Indicators

Product Show

Product Show Hardware Details

Ready to deploy the 8CH-IO-LTE?
Check real-time stock, confirm AI specifications, and order directly from our B2B store.

Remote I/O Controller Selection Guide

ModelI/O DensityNetwork UplinkPower InputDimensions (mm)

4CH-IO-RS232/485

2 AI / 4 DI / 4 DOSerial (RS232/485)Terminal (DC 9~24V)121 × 72 × 34

4CH-IO-ETH

2 AI / 4 DI / 4 DOEthernet (TCP/IP)Terminal (DC 9~24V)121 × 72 × 34

8CH-IO-ETH

8 AI / 8 DI / 8 DOEthernet (TCP/IP)Terminal + DC Jack197 × 92 × 25

8CH-IO-WF

8 AI / 8 DI / 8 DOWi-Fi (Wireless)Terminal (DC 9~24V)197 × 92 × 25

8CH-IO-LTE
(CURRENT MODEL)

8 AI / 8 DI / 8 DO4G LTE (Cellular)Terminal + DC Jack197 × 92 × 25

Hardware & Interfaces
Network Interface4G LTE CAT1 / GPRS (Mini SIM Slot)
Serial Port1x RS485 (1200~115200 bps)
Antenna Interface50Ω SMA Female
I/O Configuration
Digital Inputs (DI)8 Channels (Passive Dry Contact or Active Level 9V/24V)
Digital Outputs (DO)8 Channels (Relay Output: 5A@250VAC / 30VDC)
Analog Inputs (AI)8 Channels (12-bit ADC accuracy)
AI Sub-modelsCurrent (4~20mA, 0~20mA), Voltage (0~5V, 0~10V), or Resistance (0~10K)
Software, Power & Environment
ProtocolsModbus TCP / Modbus RTU / MQTT / JSON / HTTP
Power InputDC 9~24V (Terminal Block or DC Jack)
Power Consumption30mA @12V (Stable) / 60mA @12V (4G dialing) / 300mA Max
Dimensions19.7 cm × 9.2 cm × 2.5 cm
Operating Temp.-40°C ~ +85°C
⚙️ Key Hardware & Edge Capabilities
✓ Cellular Telemetry: Uses 4G LTE CAT1 networks (fallback to GPRS) for broad-area coverage, great for off-grid pump stations and solar farms.
✓ Consolidated I/O Density: Simultaneously monitors 8 DI, 8 AI and drives 8 DO.
✓ Built-In RS485 Gateway: Functions as an active serial server enabling you to bridge external Modbus RTU instruments directly into your cellular network.
✓ Native MQTT & JSON Integration: Connect directly to public clouds (AWS, Azure) or SCADA systems using customized MQTT JSON payloads.
✓ Hardware Watchdog Reliability: Designed to never drop offline. The integrated watchdog guarantees the module recovers automatically from cellular connection losses.

Frequently Asked Questions

Can I customize the JSON payload format when publishing sensor data to an MQTT broker?
Yes. We know that different IoT platforms (AWS IoT, Azure, ThingsBoard) have strict payload requirements. You can configure customized JSON formatting and MQTT topics directly in the VirCom configuration utility to perfectly match your cloud structure.
What happens to the relay outputs if the 4G LTE connection drops?
You can set the relay (DO) to remember its last position or automatically go to a predefined “Safe State” (like shutting down a pump) when network communication is lost. The built-in hardware watchdog will continuously attempt to dial and reconnect in the background until the 4G link is restored.
Does the RS485 port only serve to configure the module, or can it collect data?
The built-in RS485 port acts as an active Modbus RTU serial server. You can daisy-chain third-party RS485 devices (like power meters or VFDs) to it, allowing you to remotely control or poll data from those serial devices over the 4G cellular network.
How do I configure the 8CH-IO-LTE remotely?
In addition to local configuration via RS485 port, the module can also be configured remotely by cellular network using some AT commands or through Modbus parameter registers, if remote management is enabled.
🛠️ Engineering Guides & Pinouts

Practical wiring diagrams, protocol comparisons, and troubleshooting steps for field engineers.

🏗️ Hardware Selection & Architecture

Detailed buying guides and network topologies for scaling your remote SCADA deployments.

Ready to deploy? Order direct from our Official Store.
Check real-time inventory, view technical datasheets, and secure your volume pricing.

🛒 Buy 8CH-IO-LTE Now

REQUEST A QUOTE

SKU/Part No.