DSYBJR NC Surface Mounted Magnetic Contacts Switch Model 37 Black Plastic 5 Sets Mini PCs But Never Duplicated

But Never Duplicated

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DSYBJR NC Surface Mounted Magnetic Contacts Switch Model 37 Black Plastic 5 Sets Mini PCs But Never DuplicatedThese door magnetic contacts are widely used for home alarm systems to detect the open or closed state of doors and windows. They do not work alone and require connection to an alarm system to transmit door status signals. Key Features: * Contact Type: NC (Normally Closed) * Material: Plastic * Color: Black, suitable for dark or light colored doors and windows * Operation Distance: Over 1 2 inch long, ideal for home doors and windows * Mounting: