Foshan Qingjun Electronics Co., Ltd. is a China-based manufacturer of industrial automation and control products, with more than 20 years of experience. The company’s Huaqingjun-branded range includes programmable logic controllers (PLCs), RS485, RS232 and Ethernet communication modules, human-machine interfaces (HMIs), relay modules, AC/DC amplifier boards, Wi-Fi modules and switching power supplies. Its products support Modbus RTU and Modbus TCP protocols and include options for digital input and output, analog signals, pulse control and data acquisition.

Qingjun Electronics serves applications such as smart home systems, HVAC, SCADA, fire alarms, greenhouse automation, intelligent lighting, electronic toll collection and recreational vehicle control. The company also provides product manuals, software and catalogues for download, and invites customers to request information or quotations. Its website states that its products are tested and that product liability insurance is in place. The company is located in Foshan, Guangdong, China, where it lists both its office and factory.