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Shenzhen Juquande technology co., LTD., is an excellent technology driven IC agents, and electronic applications outstanding providers, also is the high-tech enterprises in Shenzhen city. Through perseverance and the efforts of many years, the company has developed into one of the China most competitive supplier of integrated circuits
Chun De Hui customers are mainly distributed in the security monitoring, digital consumer electronics, MCU series (electronic scale, small household electrical appliances, mobile power supply), wireless communication, medical electronics and other fields
Chun De Hui focus on technology value-added services and products resource integration, relying on a strong R & D team and customers together for the development of new products, providing complete solutions and integrated circuit products for customers. Chun De Hui existence value is to reduce the BOM cost, enhance the market competitiveness of products
Chun De Hui to establish and maintain attached great importance to customer relations, we will be "customer service moved" concept throughout, with the service to customers
Chun De Hui management has the full realization of the information, the company uses the advanced ERP, bar code, OA, CRM system management daily operations, to provide fast, accurate, efficient customer service. The company has successively in Shenzhen, Hongkong, Shanghai, Hangzhou, Beijing set up branches and logistics center





Gold Seller EL4001 PLC Controller Server Driver Brand New Original Spot, product brand: JQD, is a reliable and powerful automation component designed for professionals working from home who need industrial-grade performance in compact, easy-to-deploy packages. This controller combines robust hardware with thoughtful software compatibility to deliver consistent control, dependable communication, and flexible integration. It is brand new, original, and supplied on spot, ensuring that users receive genuine parts with full functionality and lasting value
Engineered for seamless integration, the EL4001 supports multiple communication protocols and provides stable server-grade driver performance. It is an ideal choice for remote engineers, automation specialists, and systems integrators who manage small to medium-scale setups from a home office. The device excels at bridging field devices and supervisory systems, enabling smooth data exchange, reliable command execution, and simplified monitoring. With the JQD brand behind it, users can expect quality manufacturing, strict testing standards, and clear documentation
The EL4001’s compact footprint makes it suitable for constrained environments. Small workshops, home-based labs, and remote control cabinets benefit from its space-saving design. Despite its modest size, it offers sufficient processing power to run complex logic routines and to handle multiple I/O operations concurrently. This means professionals working remotely can design and execute detailed automation sequences without compromising on speed or reliability. The unit’s efficient design reduces power consumption while maintaining consistent throughput, helping to keep operational costs down
Installation is straightforward. The EL4001 is designed for quick mounting and easy wiring. Clear terminal labeling and a logical layout reduce setup time, allowing remote professionals to accelerate deployment. It includes standard mounting accessories and follows common mechanical dimensions, which simplifies retrofitting into existing panels or integrating into new builds. The physical durability of the chassis and connectors ensures long-term reliability even in environments where access is limited and maintenance visits are infrequent
Connectivity is one of the EL4001’s strongest attributes. It supports industry-standard networking options to ensure smooth server driver interactions. This makes the controller a dependable node in distributed control architectures, where remote access and centralized data collection are essential. For professionals working from home, the controller’s networking features enable efficient remote diagnostics, firmware updates, and configuration changes without the need for onsite presence. It helps reduce downtime and keeps systems running smoothly with minimal physical intervention
On the software side, the EL4001 offers solid compatibility with major SCADA and HMI systems. The server driver functions are designed to be intuitive and robust, minimizing integration headaches. Remote professionals can map registers, set up alarms, and configure communication channels with confidence. Built-in safeguards and failover behaviors help protect critical processes from transient faults or network interruptions. The device also supports secure authentication mechanisms to keep control networks protected from unauthorized access
Reliability is a top priority for JQD, and the EL4001 reflects that commitment. It undergoes comprehensive testing procedures to ensure stable operation across diverse conditions. Thermal stability, electrical endurance, and vibration resistance are all considered during production. For remote professionals, this means fewer surprises and a dependable appliance that performs consistently in the background, letting users focus on higher-level tasks rather than constant troubleshooting
Maintenance and support are designed with remote users in mind. The EL4001 includes clear service documentation and an accessible firmware update process. When paired with JQD’s technical resources, professionals can remotely diagnose issues and apply corrective actions efficiently. The device’s modular design simplifies replacement and upgrades, allowing system administrators to swap units or add functionality without extensive downtime. This modularity helps maintain continuity in automated processes and reduces the complexity of managing distributed systems from a home office
Safety features are integrated to protect both the controller and connected equipment. The EL4001 includes overload protection and robust input filtering to prevent damage from electrical transients. It also offers configuration options to limit operational parameters, reducing the risk of accidental mis-configuration. These features give remote professionals peace of mind when controlling machinery or processes from a distance
Performance monitoring is straightforward with the EL4001. Built-in diagnostics provide visibility into runtime metrics, enabling proactive maintenance and efficient resource planning. For those working from home, access to timely diagnostic data means faster issue resolution and better-informed decisions. Historical logs and event tracing help correlate incidents with environmental or network conditions, aiding in root cause analysis without needing onsite inspections
The EL4001 is also designed to be future-ready. Firmware upgrade paths and support for common protocols ensure the controller remains compatible with evolving systems. This forward-looking approach reduces the need for frequent hardware replacements and preserves investment for home-based professionals managing long-term projects. JQD’s focus on longevity and serviceability contributes to lower total cost of ownership over the lifecycle of the product
Gold Seller EL4001 PLC Controller Server Driver Brand New Original Spot, product brand: JQD, is an excellent choice for professionals working from home who require dependable control hardware with flexible networking and solid server driver capabilities. It offers a compact design, easy installation, wide compatibility, and robust safety and diagnostic features. The unit’s reliability, straightforward maintenance, and upgradeable nature make it a pragmatic investment for remote automation tasks. Whether deploying a new system or retrofitting an existing setup, the EL4001 provides the performance and trustworthiness needed to manage automated processes efficiently from a home-based workspace