Finder OPTA Advanced (Codesys) 8A.04.9.024.832C - Din Rail Mount PLC Style Microcontroller Arduino

Easy-to-Use Programmable Logic Relay for Everyday Automation

The Finder OPTA programmable logic relay is a compact smart relay designed to make small automation projects easier to build and manage. Whether you are working on a control panel, pump system, building controls, ventilation, or equipment automation, this unit gives you flexible control in a space-saving format. The exact model covered here is Finder part 8A.04.9.024.832C.

Unlike a basic relay, this programmable relay controller combines relay outputs, configurable inputs, and built-in communication features in one device. It is a practical choice for users who want more control without stepping up to a much larger PLC system.

Smart Relay Features for Control Panels, Pumps, and Building Automation

This Finder automation relay is built for dependable switching and control in real-world applications. It is well suited for electrical distribution panels, packaging machines, water management systems, forced-air ventilators, air conditioning controls, and general OEM equipment.

• Compact programmable logic relay for modern automation tasks
• 8 configurable inputs for digital or analog 0 to 10 V signals
• 4 relay outputs rated at 10 A with NO (SPST) contacts
• Built-in USB-C, Ethernet, Modbus RS485, Wi-Fi, and BLE connectivity
• LED output status indicators for quick visual monitoring
• Programmable user button for custom control functions
• DIN-rail mount design for neat panel installation
• Expandable system with support for up to 5 additional modules

Programmable Relay Controller with Modern Connectivity

The 8A.04.9.024.832C is the advanced version in Finder’s 8A Series. It includes a USB Type-C port for programming, data logging, and powering during configuration, along with an RJ45 Ethernet port for network communication. It also supports Modbus RS485, Wi-Fi, and Bluetooth Low Energy, making it a strong fit for connected control systems and smart automation setups.

For users who want flexible programming options, this model supports Arduino IDE, Arduino PLC-IDE, and Codesys. That gives you room to use it as a simple smart relay or as a more capable compact PLC alternative depending on your project needs.

Compact PLC Alternative with Useful I/O Flexibility

This Finder programmable logic relay includes 8 inputs that can be configured for digital or analog use. Analog input range is 0 to 10 V, and the unit supports both PNP and NPN input compatibility. On the output side, you get 4 normally open relay outputs rated for 10 A, making it suitable for switching lighting, solenoids, motors, control loads, and similar devices within specification.

The compact 70 mm wide housing helps save panel space, while the 35 mm DIN-rail mounting format makes installation straightforward in control cabinets and enclosures.

Technical Overview

• Manufacturer: Finder
• Part Number: 8A.04.9.024.832C
• Series: Finder 8A Series OPTA programmable logic relay
• Supply Voltage: 12-24 V DC (operating range 10.2-27.6 V DC)
• Inputs: 8 configurable digital or analog inputs (0-10 V)
• Input Compatibility: PNP / NPN
• Outputs: 4 NO (SPST) relay outputs
• Output Rating: 10 A rated current, 15 A peak
• Maximum Switching Voltage: Up to 250 V AC (400 V max)
• Communication: Ethernet, Modbus TCP/IP, Modbus RS485, Wi-Fi, Bluetooth Low Energy
• Programming: Arduino IDE, Arduino PLC-IDE, Codesys
• Mounting: 35 mm DIN rail
• Width: 70 mm
• Protection Rating: IP20
• Operating Temperature: -20 C to +50 C

Typical Applications for This Automation Relay

This programmable relay controller works well in machine and process control, lighting and solenoid switching, HVAC and refrigeration systems, commercial equipment, pump panels, ventilation systems, and general-purpose OEM assemblies. Its combination of relay outputs, configurable inputs, and network connectivity makes it useful for both standalone control and connected automation projects.

Why Choose the Finder OPTA Smart Relay?

If you need a smart relay module that offers more flexibility than a standard industrial relay, the Finder OPTA is a strong option. It gives you compact PLC-style control, straightforward DIN-rail installation, multiple communication options, and expandable I/O in one modern package. For users building compact automation systems, it offers a clean balance of usability, features, and industrial-grade performance.

Please verify load type, wiring method, and programming environment for your specific installation before use.