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This in-depth guide explains how TMR keyboard switches work by breaking down their core MTJ sensing mechanism and comparing two mainstream structures: traditional spring-based TMR switches and advanced Uniqmag springless TMR switches. It covers complete internal component layouts, magnetic detection principles, latency performance, friction behavior, noise output, and long-term durability differences. By understanding these structural distinctions, keyboard enthusiasts and gamers can accurately distinguish high-precision magnetic switches and make data-driven purchasing decisions for gaming and daily use.