WiFi Connectivity
Wireless monitoring and control without complex wiring infrastructure.
WIRELESS MQTT DIGITAL I/O DEVICE
4 Digital Input 4 Digital Output WiFi Node
A compact and reliable Wi-Fi-enabled digital I/O node designed for real-time monitoring and remote control in modern IoT and IIoT environments. With 4 opto-isolated digital inputs and 4 relay outputs, the device enables simultaneous field-status monitoring and remote equipment control.
Connect field devices wirelessly. Monitor digital signals,
control equipment remotely, and integrate industrial I/O with
cloud, SCADA and IoT platforms.
Key Features & Benefits
Industrial-grade reliability meets modern wireless connectivity for seamless integration into your automation ecosystem.
MQTT Communication
Lightweight communication for cloud integration and real-time IoT data exchange.
Modbus TCP over WiFi
Industrial protocol compatibility for SCADA and automation systems.
4DI + 4DO Architecture
Monitor field signals and remotely control connected equipment through one compact node.
Industrial Isolation
Opto-isolated inputs provide electrical isolation for reliable field signal monitoring.
Compact DIN Rail Design
Modular enclosure suitable for installation inside industrial control panels.
Plug-and-Play Installation
Designed for straightforward deployment in new and retrofit installations.
Protection Features
Reverse-polarity, overvoltage, short-circuit, transient- voltage and TVS/ESD protection.
System Architecture
Seamless connectivity from field devices to the cloud dashboard.
Digital Input Section
Monitor Digital Signals in Real Time
The device provides 4 isolated digital input channels for monitoring field signals from switches, sensors and dry-contact devices. The inputs support 24 VDC sink/source operation and provide isolation up to 5000 VRMS for 1 minute.
- 4 isolated digital input channels
- 24 VDC sink/source contact rating
- Opto-isolated input design
- Up to 5000 VRMS isolation for 1 minute
- Suitable for switches, sensors and dry-contact devices
Digital Output Section
Remote Relay Control for Connected Equipment
The 4 relay outputs allow remote switching of connected loads and equipment through MQTT or Modbus TCP commands. Each output is a Form A relay output rated at 5 A @ 240 VAC or 5 A @ 30 VDC.
| OUTPUT | EXAMPLE LOAD | |
|---|---|---|
| DO1 | Alarm / Buzzer | Trigger alarms, buzzers or warning devices for machine and process events. |
| DO2 | Indicator Light | Control visual status indicators for quick equipment or process notification. |
| DO3 | Pump / Motor | Control pumps, motors and other compatible equipment remotely. |
| DO4 | Solenoid Valve | Operate valves and actuators for industrial automation applications. |
WiFi Connectivity & Communication
Wireless Connectivity for IoT and Industrial Automation
The node uses IEEE 802.11 b/g/n WiFi at 2.4 GHz and supports JSON data formatting. Supported protocols include DHCP, HTTP, and MQTT. The product page also identifies Modbus TCP over WiFi for industrial protocol compatibility and SCADA/ automation integration.
- WLAN: IEEE 802.11 b/g/n, 2.4 GHz
- Data format: JSON
- Supported protocols: DHCP, HTTP, MQTT
- Modbus TCP over WiFi
- Programmable communication watchdog timer
- Green communication-status LED indication
Smart I/O. Smarter Operations.
Monitor machine signals, control equipment and drive OEE, MES and productivity improvements.
OEE Monitoring
Track availability, Performance and quality in real time.
Part & Cycle Counting
Count parts produced to track output and productivity. Accurate counting for every machine cycle.
Production Tracking
Monitor Production Output and batch progress.
Downtime Analysis
Identify downtime reasons and improve efficiency.
Count Every Pulse. Monitor Every Event.
Built-in Digital Input Counter for Smart Monitoring & Automation
UCT 4DI 4DO WiFi Converter can use its digital inputs to capture and count pulse-based signals from connected field devices. Count events locally at the device, transmit the accumulated data over WiFi, and monitor the values remotely through IoT platform or dashboard.
Accurate Pulse Counting
Capture digital pulses from meters, sensors, and machines for precise event and consumption monitoring.
Accumulated Count
Maintain cumulative counts to track total usage, production cycles, machine events, or other repetitive operations.
Remote Data Transmission
Send counter data wirelessly through WiFi for long-range monitoring without extending sensor wiring infrastructure.
Smart Monitoring & Analytics
Visualize counter values, trends, and historical data through the connected IoT platform or dashboard.
Technical Specifications
Detailed hardware and environmental parameters for industrial deployment.
General
- Input Power Unregulated 9-58 VDC
- Power Consumption Less than 1 W @ 12 VDC
- Protection Reverse polarity, over-voltage (>=35 VDC), short circuit, transient voltage, TVS/ESD
- Indication Power (Red), Status (Green)
- Connector 5 mm pitch screw terminal blocks
- Enclosure PC
- Dimensions 149 mm x 99 mm x 45 mm
- Warranty 12 months from installation or 18 months from delivery
Environment
- Operating Temp 0 to 65°C
- Storage Temp -10 to 70°C
- Humidity 5-95% RH, non-condensing
Digital Input
- Channels 4
- Contact Rating 24 VDC sink/source (isolated)
- Isolation Up to 5000 VRMS for 1 minute
- Input Type Standard opto isolated inputs
Digital Output
- Channels 4
- Contact Rating 5 A @ 240 VAC, 5 A @ 30 VDC
- Output Type Form A relay output
Mounting
- Architecture Modular
- Options DIN rail, wall, or stack mountable
- Installation Plug and Play
Functional Description
Core operational capabilities for industrial monitoring and control.
Digital Input Monitoring
Reads signals from switches, sensors and dry-contact devices through isolated digital input channels.
Remote Output Control
Relay outputs allow remote switching of loads and automation equipment using MQTT or Modbus TCP commands.
Wireless Communication
WiFi connectivity integrates the node with cloud platforms, dashboards and SCADA systems using JSON data format.
Status Indication
LED indicators provide feedback on power and communication status.
Applications & Use Cases
Versatile wireless I/O solutions for diverse industrial and commercial environments.
Industrial Automation
Monitor machine status and remotely control compatible equipment and automation devices.
Building Management
Connect digital field signals and relay-controlled devices for building monitoring and control.
Smart Car Parking
Monitor parking-related digital signals and control connected equipment wirelessly.
Smart Logistics
Enable distributed monitoring and control for logistics and material-handling environments.
Utility Management
Monitor and control distributed utility equipment where wireless deployment is beneficial.
Remote Equipment Monitoring
Collect field status remotely and provide relay-based control through connected IoT systems.
Product Gallery
A closer look at the 4 Digital Input 4 Digital Output WiFi Node from every angle.
Ready to Connect Your Digital I/O Wirelessly?
Deploy the UCT 4DI 4DO WiFi Node for flexible digital monitoring and remote relay control across industrial, building, logistics, parking and utility applications.