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  • Huaqingjun 8DI 8DO Transistor Output PLC Input Compatible PNP NPN PLC Programmable Controller for Solenoid Valves
  • Huaqingjun 8DI 8DO Transistor Output PLC Input Compatible PNP NPN PLC Programmable Controller for Solenoid Valves
  • Huaqingjun 8DI 8DO Transistor Output PLC Input Compatible PNP NPN PLC Programmable Controller for Solenoid Valves
  • Huaqingjun 8DI 8DO Transistor Output PLC Input Compatible PNP NPN PLC Programmable Controller for Solenoid Valves
  • Huaqingjun 8DI 8DO Transistor Output PLC Input Compatible PNP NPN PLC Programmable Controller for Solenoid Valves
  • Huaqingjun 8DI 8DO Transistor Output PLC Input Compatible PNP NPN PLC Programmable Controller for Solenoid Valves
Huaqingjun 8DI 8DO Transistor Output PLC Input Compatible PNP NPN PLC Programmable Controller for Solenoid Valves
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Huaqingjun 8DI 8DO Transistor Output PLC Input Compatible PNP NPN PLC Programmable Controller for Solenoid Valves

  • 5 - 99 Pieces
    $43
  • 100 - 199 Pieces
    $39
  • >= 200 Pieces
    $37

Customization:

Customized logo（Min.Order: 50 pieces）
Customized packaging（Min.Order: 50 pieces）
Graphic customization（Min.Order: 50 pieces）
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Huaqingjun 8DI 8DO Transistor Output PLC Input Compatible PNP NPN PLC Programmable Controller for Solenoid Valves

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Industrial Automation Control: Equipped with 8 digital inputs (DI) and 8 digital outputs (DO), this PLC is designed to manage solenoid valves, sensors, and actuators in industrial processes.
  • Programmable Logic: Supports ladder logic programming for easy customization of control sequences, enabling precise automation of tasks like machinery operation and process monitoring.

Key features

  • 1. Rugged Industrial-Grade Construction

    • With a durable metal/plastic body designed for harsh environments, you can ensure long-term reliability in industrial automation and control systems.

  • 2. User-Friendly Interactive Design

    • With a clear display screen and intuitive keypad (including "SET," "INSERT," and "DEL" buttons), you can monitor real-time status and adjust control programs effortlessly without advanced coding skills.

  • 3. High-Performance Transistor Output

    • With 8DI/8DO transistor outputs, you can achieve fast, precise control of solenoid valves and industrial devices, enabling seamless integration into high-speed automation tasks.

  • 4. Compact Size for Versatile Applications

    • With a compact, space-saving design, you can easily integrate this PLC into tight industrial setups or expand it for use in assembly lines, equipment control, and 24/7 commercial operations.

  • 5. Industrial Compliance & Longevity

    • With industrial-grade certification and a 1-year warranty, you can trust its durability and performance in demanding environments, backed by manufacturer reliability guarantees.

Product details

Huaqingjun 8DI 8DO Transistor Output PLC Input Compatible PNP NPN PLC Programmable Controller for Solenoid Valves

The Huaqingjun 8DI 8DO Transistor Output PLC is a compact, industrial-grade programmable logic controller designed for automation tasks in manufacturing, process control, and electronic equipment management. With 8 digital inputs (DI) and 8 digital outputs (DO), it offers reliable control of solenoid valves and actuators while supporting PNP/NPN sensor compatibility. Its durable construction and intuitive ladder logic programming interface make it ideal for industrial applications requiring precision and ease of use.

Technical specifications

FeatureSpecificationApplication Scenario
Input/Output Configuration8DI/8DO Transistor OutputControl of solenoid valves and industrial actuators in manufacturing lines
Sensor CompatibilityUniversal PNP/NPN InputFlexible integration with mixed sensor types in automated assembly lines
Programming MethodLadder Logic with Keypad InterfaceEasy program creation and adjustments for small to medium automation projects
Display ScreenReal-Time Status MonitoringOn-site troubleshooting and system status verification in industrial settings
Warranty1-Year Comprehensive CoveragePeace of mind for industrial users needing reliable support

Customization guide

Adjustable I/O configurations and program parameters (e.g., timing sequences, sensor thresholds) to meet specific automation needs, such as custom control logic for conveyor systems or temperature regulation.

Get inspired

With universal PNP/NPN inputs, you can seamlessly integrate sensors from multiple vendors without additional adapters. The transistor output allows direct control of high-current devices, eliminating the need for external relays. Compact size (120x80mm) ensures easy installation in space-constrained machinery control panels.

Choose your model

ParameterBase Model (8DI/8DO)Advanced Model (16DI/16DO)Pro Model (32DI/32DO)
I/O Capacity8DI/8DO16DI/16DO32DI/32DO
Processing Speed0.2 ms/1K steps+15% (0.17 ms/1K steps)+30% (0.14 ms/1K steps)
Memory8KB User Program16KB32KB
CommunicationRS-485RS-485 + EthernetRS-485 + Ethernet + WiFi

Supplier's note

  1. Technical Breakthroughs:

    • Universal PNP/NPN input reduces wiring complexity by 40% compared to traditional PLCs.
    • Transistor output enables direct control of high-current solenoid valves, saving 20% in external component costs.
    • Compact form factor (120x80mm) saves 30% panel space versus standard PLCs.

  2. Version Selection Guidance:

    • Base Model: Ideal for small workshops or OEM equipment with basic I/O needs (e.g., simple conveyor control).
    • Advanced Model: Suitable for mid-scale factories requiring network connectivity (Ethernet) and expanded I/O for robotics or packaging lines.
    • Pro Model: Best for large-scale automation systems needing high-speed processing (30% faster than base) and wireless integration (WiFi) in smart factories.

With the Pro Model’s 32KB memory and WiFi, you can deploy complex multi-station control systems while remotely monitoring operations. The Advanced Model’s Ethernet port enables seamless integration into SCADA networks, making it 25% faster to deploy than competitors’ entry-level PLCs.

Frequently asked questions

  • Which Huaqingjun PLC model is best suited for small-scale industrial automation projects with limited space?

  • How do I maintain the terminal strip and ensure longevity of the Huaqingjun 8DI 8DO PLC?

  • Transistor Output vs. Relay Output PLC: Which is better for controlling solenoid valves in industrial settings?

  • Can the Huaqingjun 8DI 8DO PLC be customized for specific automation tasks, like temperature control?

  • Is the Huaqingjun PLC’s material and design compliant with industrial safety standards?

  • Does the Huaqingjun 8DI 8DO PLC support both PNP and NPN sensors for diverse input configurations?

  • How user-friendly is the Huaqingjun PLC’s ladder logic programming interface for beginners?

  • What warranty and technical support does the Huaqingjun 8DI 8DO PLC offer for industrial users?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
I/O CapacityManufacturing lines, complex automation8DI/8DO (Our Base) ▲
16DI/16DO (Our Advanced) ▲▲
Industry: 4DI/4DO		Handles 2x more devices than industry standard (▲). Supports large-scale systems.Higher I/O count may increase cost or complexity for simpler setups.
Programming InterfaceCustom control systems, multi-languageLadder Logic + Basic Software (Base) ▲
Multi-language (Ladder/Function Block) (Advanced) ▲▲
Industry: Ladder Logic only		Advanced model supports diverse programming styles (▲▲). Reduces reliance on proprietary tools.Steeper learning curve for advanced features.
DurabilityHarsh environments (dust/water)IP65 (Base) ▲
IP67 (Advanced) ▲▲
Industry: IP54		Withstands water jets and dust (IP65/67). Ideal for outdoor or industrial plants.Advanced models may require additional cooling for high temperatures.
Power ConsumptionEnergy-sensitive applications3.5W (Base) ▲
2W (Advanced) ▲▲
Industry: 5W		Consumes 30% less power than industry average (▲). Lowers operational costs.Reduced processing power in low-power modes for advanced models.
Expansion CapabilitiesScalable systems1 Expansion Module (Base) ▲
4 Modules (Advanced) ▲▲
Industry: No support		Base model supports growth; Advanced allows full system integration (▲▲).Expansion modules add cost and complexity.
WarrantyLong-term reliability-critical projects1 Year (Base/Industry) ▲
2 Years (Advanced) ▲▲		Advanced model offers double the standard warranty (▲▲). Enhances peace of mind.Base model’s warranty matches industry norms but lacks premium support.

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