Yueqing Tongda 2 Way Micro Switch New Iteration, Technology Empowers Multi-Circuit Precise Control​

Yueqing, November 18, 2025 — Yueqing Tongda Wired Electric Factory, with 38 years of experience in the micro switch field, recently announced the iterative mass production of its 2 Way Micro Switch series. Leveraging the independently developed patented "dual-contact linkage control" technology, this series breaks through the functional limitations of traditional single-circuit switches, realizing independent control of two circuits. It has successfully partnered with leading enterprises in smart homes, industrial automation, automotive electronics and other fields, providing efficient and integrated control solutions for multi-circuit equipment.

As a core component with independent on-off functions for two circuits, the 2 Way Micro Switch is widely used in scenarios requiring simultaneous control of two independent circuits, such as function switching and status feedback of smart devices, dual-stroke limit of industrial machinery, and multi-mode control of automotive electronics. Its integrated design can replace two sets of single-circuit switches, significantly reducing the internal installation space of equipment.

This iteration specifically optimizes three major industry pain points: "poor dual-circuit synchronization, contact interference, and limited adaptation". It adopts a patented dual-contact linkage structure, with a synchronization response error of ≤2ms for the two circuits, and the trigger consistency is 80% higher than that of traditional separate solutions; the contacts are made of silver-palladium alloy material, treated with independent vacuum coating, with an initial contact resistance of ≤15mΩ for each, an electrical lifespan of 100,000 cycles, and a mechanical lifespan exceeding 1.5 million cycles, effectively avoiding functional failure caused by dual-circuit signal interference; it supports two contact configurations: SPDT (Single Pole Double Throw) and DPDT (Double Pole Double Throw), with rated loads ranging from 0.1A/250V AC to 5A/125V AC, adapting to diverse load requirements from low-power sensors to small power equipment.

2 Way Micro Switch maintains the advantage of miniaturized design, with an overall size of only 22×12×8mm. It supports three installation methods: through-hole mounting, soldering mounting, and snap-on mounting, which can be directly embedded in compact equipment, saving 60% of installation space compared with the traditional dual-switch combination scheme. The protection level includes IP40 basic version and IP65 dustproof and waterproof version. The IP65 model adopts a sealed potting process, which can resist the erosion of dust and spray environments, and is suitable for humid industrial workshops and outdoor equipment scenarios.

A strict quality control system ensures product reliability. 2 Way Micro Switch rely on a fully automated precision assembly line, the key dimensional error is controlled within ±0.01mm, and each finished product must pass 9 tests including dual-circuit synchronization test, high-low temperature cycle (-40℃ to 105℃), salt spray corrosion, and one-million-time pressing. Currently, the product has obtained international certifications such as UL, VDE, and CQC, complies with the IATF16949 automotive industry standard and RoHS environmental directive, and maintains a 100% factory qualification rate.

The market application results are remarkable: in the smart home field, the customized version supporting a brand of smart curtains synchronously controls motor start-stop and limit feedback, increasing equipment integration by 50% and reducing after-sales failure rate by 65%; in the industrial automation scenario, it is adapted for dual-stroke control of small assembly lines, and the dual-circuit synchronous triggering ensures precise linkage of mechanical actions, increasing production efficiency by 20% after application in an electronics factory; in the automotive electronics field, it is used for mode switching control of vehicle air conditioners, passing 18 months of actual vehicle testing without faults and winning bulk orders from automobile manufacturers.