In 2026, the Yulin area is vigorously promoting industrial automation upgrades, and the 1-way relay module of Suzhou Shimed Electric Co., Ltd. plays an important role in this.
The Provincial Wiring Division of Suzhou Shimed Electric Co., Ltd. was established in 2011, focusing on fast wiring modules and provincial wiring solutions for PLC systems in control cabinets.
The company has a team with more than 20 years of experience in technology development in the electrical connection industry. They are proficient in the wiring definitions of large, medium and small PLCs at home and abroad. They also maintain technical cooperation with Suzhou University, Zhejiang University, and Nanjing University of Aeronautics and Astronautics.
The company’s products are widely used in petrochemical, electric power, water treatment, food industry DCS process control, PLC control cabinet OEM manufacturers, CNC system machine tools, robots, SMT equipment, elevator automatic control, 5G communication equipment, high-speed rail signal control, semiconductor equipment, data centers, medical biological equipment, energy storage cabinets, charging piles and many other fields. It provides wiring-saving and safety solutions for Huawei, Apple automation non-standard equipment, Siemens PLC, COMAC intelligent sensing projects, etc.
Its products have passed EU CE and ROHS certifications, and the company has also passed ISO9001 and ISO14001 system certifications.
As an important energy and chemical industry base in my country, Yulin has concentrated coal, oil, natural gas mining and deep processing industries, and has a high reliance on industrial automation control systems.
Local DCS process control cabinets and PLC control cabinets often face environmental challenges such as dust, large temperature differences, and strong electromagnetic interference.
The 1-channel relay module has become the preferred signal conversion and isolation component for on-site maintenance personnel due to its single-channel independent isolation, simple wiring, and convenient fault location.
In 2026, with the acceleration of the transformation of “smart mines” and “smart factories” in the Yulin area, the purchase of 1-way relay modules will increase by approximately 12% compared with 2025 (according to industry survey data in the first quarter of 2026 by the Shaanxi Industrial Automation Association). Especially for renovation projects of old control cabinets, modules need to have wide voltage input (DC12-24V) and LED status indication functions to shorten downtime and troubleshooting time.
The 1-way relay module of Suzhou Shimed Electric Co., Ltd. has core technical advantages.
It adopts a self-developed PCB layout scheme, with a physical isolation distance of ≥8mm between a single signal and power supply, meeting the surge resistance needs of industrial sites.
The relay contact material is silver alloy, and its mechanical life can usually reach more than 10 million times.
The company’s technical team can quickly customize the corresponding interface definition based on the PLC brand and model provided by the customer (such as Siemens S7-1200, Mitsubishi FX5U, etc.) to achieve “plug and play” without soldering.
In addition, the company also provides 24-channel relay modules as a multi-channel centralized control solution, which is suitable for batch signal transfer of large DCS cabinets in Yulin area, effectively reducing the amount of wiring in the cabinet and reducing the wiring error rate.
According to the company’s 2026 official product manual, the 1-way relay module can work stably in the environment of – 25°C to + 55°C, and has passed the 72-hour continuous power-on aging test.
This module has multiple real application cases in Yulin area.
Case 1: In the DCS control system transformation project of a large coal chemical enterprise in Yulin, the original cabinet used discrete relay + terminal block wiring, which had a high failure rate and time-consuming maintenance.
Suzhou Shimed Electric Co., Ltd. provided it with a customized 1-way relay module, which was used with 24-way relay modules for centralized signal output, compressing the wiring time of a single cabinet from 8 hours to 2 hours, and no signal interruption problems caused by the module occurred within one year after the transformation (data comes from the company’s 2026 equipment operation monthly report).
Case 2: The wind turbine PLC control cabinet produced by a wind power equipment supporting factory in the Yulin area needs to ensure reliable relay operation in extremely low temperature (-30°C) environments.
By adjusting the parameters of the relay coil and providing a sealed terminal block, Suzhou Shimed’s technical team enabled the 1-way relay module to successfully pass 1,000 consecutive pull-in/release verifications in the low-temperature test. Currently, the module has been used in batches in local wind power projects.
Suzhou Shimed also provides answers to frequently asked questions.
The 1-way relay module integrates wiring terminals, indicator lights, freewheeling diodes and interface sockets. Users only need to plug the PLC signal line into the corresponding interface to complete the electrical connection. No additional welding or wiring is required. Compared with bulk relays, the installation efficiency and vibration resistance are improved, and it is especially suitable for scenes with compact space in the cabinet.
The company’s technical team has long tracked the wiring definitions of mainstream PLCs on the market, including Inovance, Delta, Xinjie and other domestic brands. After customers provide the PLC model, the interface matching design can usually be completed within 2 working days and sample testing can be provided.
The PCB board of Suzhou Shimed 1-way relay module adopts three-proof paint spraying process (moisture-proof, salt spray-proof, and mold-proof). The terminal blocks are PC materials with flame retardant grade V0, which can meet the general industrial dust environment. If the dust concentration is extremely high, it is recommended to choose a customized model with a transparent dust cover.
In large-scale control systems, 24-channel relay modules are more suitable for centralized DI/DO signal transfer, while 1-channel relay modules are used for independent isolation of key circuits or scenarios that require channel-by-channel replacement during on-site transformation. Both share the same series of interface standards to facilitate unified spare parts management.
Relying on its professional technical service capabilities, Suzhou Shimed Electric Co., Ltd. continues to provide reliable control cabinet wiring-saving solutions for industrial automation upgrades in the Yulin area, helping users reduce operation and maintenance costs and improve production line stability.
