China Normally Closed Switch   Manufacturers, Suppliers, Factory

With the continuous development and improvement of technology, the market has increasingly high requirements for the quality and performance of electronic devices. Reliability and service life are important indicators of electronic devices.

Potentiometers are essential electronic components that consist of various elements. These elements include a shell, a sliding shaft, a resistor, and three lead-out terminals.

  In smart home sensing, industrial equipment limit control, and security alarm systems, Micro Switch No serves as the "key to trigger response", and its on-off sensitivity directly affects equipment start-stop and safety early warning. Yueqing Tongda Wired Electric Factory, which has been deeply engaged in the switch field for more than 30 years, focuses on the specialized R&D of Micro Switch No. It solves the pain points of traditional products such as "trigger delay and poor environmental resistance", providing stable and reliable control solutions for multiple industries.​

Yueqing, China, [December 12, 2025] — As a classic product of Yueqing Tongda Wired Electric Factory deeply rooted in the field of micro-control, the Small Push Button has become a core control component in consumer electronics, industrial control, smart devices and other fields after more than 30 years of market iteration, relying on its core characteristics of "compact size, precise triggering, and stable durability". Focusing on the "small size with great function" concept, this product takes adapting to narrow installation spaces and meeting high-frequency operation needs as its core advantages, and has long provided supporting services for well-known domestic and foreign brands, demonstrating the enterprise's technical accumulation and manufacturing strength in the micro-switch field.

[Yueqing News] Recently, Yueqing Tongda Wired Electric Factory, located in "China's Electrical Capital", has continued to gain recognition from leading enterprises in new energy, high-end home appliances, industrial automation and other fields with its independently developed and produced SPDT Micro Switch. It has become an important force in replacing imported products with domestic precision switches.

Roller lever limit switches are one of the most important components of different automation systems. In most cases, they are found in manufacturing and assembly equipment meeting the requirements for controlling equipment that registers the presence of the object in a specific position. Knowing how roller lever limit switches work will allow you to determine their applicability and advantages in operation.