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The second is that the overtravel of the microswitch is designed to ensure reliable contact and prevent poor repetition accuracy of the action points. But if the overtravel is too large, it will increase the deformation of the internal spring system. As the usage time and frequency increase, the stability of the action characteristics will quickly deteriorate, and the service life of the microswitch will also be greatly shortened. Therefore, it is better to use an overtravel that is one-third of the total length of the product's overtravel.

The welding time of the welding terminal should not exceed 3-8 seconds, and the temperature should not exceed 260 degree . Otherwise, it will be scrapped due to overheating during welding, burning the substrate or causing solder to penetrate into the interior of the switch, affecting insulation performance, contact performance, and action characteristics. Corrosive zinc chloride shall not be used as flux. The general specification for microswitches is GJB 809A-1997 "General Specification for Microswitches".