8 Channel Digital Input Digital Output Relay Module 8DI 8DO Modbus RTU TCP Remote I/O Controller
Product No.: ZH-YT0808
8 Digital Inputs + 8 Relay Outputs
High Current 16A Industrial Relays
Multiple Communication Interfaces
Industrial Isolation Protection
Product Detailis:
Industrial Remote I/O Module for Automation SystemsThe ZH-YT0808 Remote I/O Controller is designed for industrial automation, remote monitoring and process control systems. It combines 8 digital inputs and 8 relay outputs in a compact DIN rail mounted module.
With support for Modbus RTU and Modbus TCP protocols, the module can be integrated directly into PLC, SCADA, DCS, HMI and Building Management Systems.
The industrial-grade ARM processor ensures high-speed communication and reliable operation, while built-in isolation protection improves system stability in electrically noisy environments.
Key Features
① 8 Digital Inputs + 8 Relay OutputsSupports dry contact, wet contact and pulse signal acquisition with 8 independent relay outputs for industrial control applications.
② High Current 16A Industrial Relays
Uses plug-in Omron G2R relays supporting up to AC250V 16A or DC30V 16A switching capacity. Easy replacement reduces maintenance costs.
③ Multiple Communication Interfaces
Supports RS485, RS232 and Ethernet communication with Modbus RTU and Modbus TCP protocols for seamless PLC and SCADA integration.
④ Industrial Isolation Protection
Features optical isolation, magnetic isolation, surge protection and 1500VDC communication isolation for reliable operation in industrial environments.
Functions
Flexible Input Signal Acquisition
Supports:Dry Contact Inputs
Wet Contact Inputs
Push Buttons
Limit Switches
Proximity Sensors
Magnetic Switches
Infrared Sensors
Pulse Signals
Suitable for equipment status monitoring and industrial signal collection.
Each relay output supports:
AC250V / 16ADC30V / 16A
NO / NC / COM Contacts
Pulse Output Mode
Latching Mode
Interlock Mode
Flashing Mode
Timer Mode
Ideal for controlling motors, pumps, solenoid valves, alarms and industrial loads.
Communication Options
Available interfaces:
RS485RS232
Ethernet TCP/IP
Modbus RTU
Modbus TCP
Easy integration with:
Siemens PLC
Schneider PLC
Mitsubishi PLC
Delta PLC
Allen-Bradley PLC
SCADA Software
Industrial PCs
Edge Gateways
Specification
| Parameter | Specification |
|---|---|
| Digital Inputs | 8 Channels |
| Input Type | Dry Contact / Wet Contact / Pulse Signal |
| Relay Outputs | 8 Channels |
| Relay Contact Type | NO / NC / COM |
| Relay Capacity | AC250V 16A / DC30V 16A |
| Communication Interface | RS485, RS232, Ethernet (Optional) |
| Communication Protocol | Modbus RTU / Modbus TCP |
| RS485 Distance | Up to 1200m |
| Ethernet Speed | 10/100 Mbps |
| Isolation Voltage | 1500VDC |
| Power Supply | 12VDC or 24VDC |
| Power Consumption | <17W |
| Operating Temperature | -40°C to +80°C |
| Installation | DIN Rail Mounting |
| Dimensions | 270 × 87 × 58 mm |
Phone Model
| Model | Input / Output | Communication | Power Supply |
|---|---|---|---|
| ZH-YT0808-14 | 8DI + 8 Relay Outputs | RS485 + RS232 | 24VDC |
| ZH-YT0808-12 | 8DI + 8 Relay Outputs | RS485 + RS232 | 12VDC |
| ZH-YT0808-34 | 8DI + 8 Relay Outputs | Ethernet + RS485 | 24VDC |
| ZH-YT0808-32 | 8DI + 8 Relay Outputs | Ethernet + RS485 | 12VDC |
Applications
1.Industrial Automation
Remote equipment monitoring and control.2.PLC Expansion
Digital I/O expansion for PLC systems.
3.Smart Factory
Production line automation and machine control.
4.Building Automation
Lighting, HVAC and access control systems.
5.Energy Management
Power distribution and equipment status monitoring.
6.Water Treatment
Pump station and valve control applications.
FAQ
Q1: Does the module support Modbus TCP?Yes. Ethernet versions support both Modbus TCP and Modbus RTU communication protocols.
Each relay supports up to AC250V 16A or DC30V 16A.
Q3: Can it be connected to Siemens PLC?
Yes. The module supports standard Modbus RTU and Modbus TCP protocols, making it compatible with Siemens, Schneider, Mitsubishi, Delta and other PLC brands.
Q4: Is the module isolated?
Yes. Communication and I/O circuits use industrial isolation technology with up to 1500VDC isolation protection.
The module is designed for standard DIN rail mounting in industrial control cabinets.
