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The microswitch is a small but essential control component in boiler and burner systems, used to detect positions or actuate safety circuits. This switch responds to mechanical movement, such as valve or damper position, to send signals to the control board. As a common heating equipment component, a reliable microswitch ensures accurate operation of safety interlocks and sequence controls. It is widely used in various applications and should be replaced if the system exhibits intermittent behavior or failure to start.