Slim Relay Card
The Denki Seigyo Relay Card is a reliable interface solution designed for industrial automation, control panels, and PLC systems. Built with high-quality relays, optically isolated inputs, and robust PCB design, it ensures safe and efficient signal switching between control and power circuits. Available in various channel configurations (4, 8, 16, or 32), our relay cards offer modular connectivity, LED status indication, and long operational life.
Delivering precision, durability, and flexibility, Denki Seigyo relay cards are ideal for automation, instrumentation, and power control applications.

š Product Overview
The Denki Seigyo Slim Relay Card is an advanced, high-performance interface module designed to control electrical loads safely and efficiently in automation and control systems.
Engineered with high-quality relays, opto-isolated input circuits, and industrial-grade PCB design, this card ensures reliable operation, electrical isolation, and long service life even under demanding industrial environments.
It serves as a critical bridge between low-voltage control signals (from PLCs, microcontrollers, or sensors) and high-voltage load circuits, making it ideal for industrial automation panels, process control systems, machine control, and instrumentation setups.
ā” Key Features
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š¹ Available in 4, 8, 16, and 32-channel configurations
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š¹ Opto-isolated inputs for electrical protection of controllers and PLCs
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š¹ Plug-in relays for easy maintenance and quick replacement
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š¹ LED indicators for real-time relay status visualization
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š¹ Heavy-duty PCB with high dielectric spacing for industrial durability
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š¹ Modular screw terminal connectors for easy field wiring
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š¹ Compatible with 5V, 12V, and 24V DC control signals
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š¹ Compact design suitable for DIN rail or panel mounting
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š¹ Test button (optional) for manual relay triggering
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š¹ Designed and manufactured as per industrial EMC standards
š§© Technical Specifications
| Parameter | Specification |
|---|---|
| Model Variants | 4, 8, 16, 32 Channel |
| Relay Type | SPDT / DPDT Electromechanical Relay |
| Contact Rating | 5A @ 230V AC / 30V DC (resistive load) |
| Coil Voltage | 5V DC / 12V DC / 24V DC (customizable) |
| Input Type | Optically Isolated (via optocoupler) |
| Input Current | 8ā15 mA per channel (typical) |
| Dielectric Strength | 1500 VAC between coil and contacts |
| Response Time | <10 ms (Operate), <5 ms (Release) |
| Status Indication | LED indication per channel |
| Connector Type | Screw Terminal Blocks / Ribbon Header |
| Mounting Type | Panel Mount / DIN Rail Mount (optional) |
| PCB Material | FR4 Grade, 1.6 mm thick, 70 μm copper |
| Operating Temperature | 0°C to +55°C |
| Storage Temperature | -10°C to +70°C |
| Humidity | Up to 95% RH (non-condensing) |
| Insulation Resistance | >100 MĪ© at 500V DC |
| Life Expectancy | >100,000 mechanical operations |
| Enclosure (Optional) | Powder-coated MS or ABS enclosure |
| Standards | IS/IEC 61010-1, IEC 60255 compliant |
š Applications
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Industrial Automation Systems
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PLC & Microcontroller Interface
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Control Panels & Process Control
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Machine Tools & Robotics
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HVAC and Power Distribution Systems
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Signal Switching & Isolation Modules
š Advantages
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Extended relay life and stable performance
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High noise immunity and low power consumption
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Compact, modular, and service-friendly design
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100% tested for quality and performance
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Custom designs available as per user specification
š·ļø Ordering Information
Example:
Model: DS-RC16-24V
Description: 16-Channel Relay Card, 24V DC Coil, Opto-isolated Inputs
š§¾ Manufacturer
Denki Seigyo
Precision Industrial Automation & Control Solutions
