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Uxcell 3Pcs No/Nc Door Window Contact Magnetic Reed Switch Alarm Security 15-20Mm

A partire da 15,11 $
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Uxcell 3Pcs No/Nc Door Window Contact Magnetic Reed Switch Alarm Security 15-20Mm

Disponibilità

Harfington

NO NC type designed for use with alarm systems. Great for use in family and factory window, door. e…

Prezzo
15,11$
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Uxcell 3Pcs No/Nc Door Window Contact Magnetic Reed Switch Alarm Security 15-20Mm

NO NC type designed for use with alarm systems. Great for use in family and factory window, door. etc.NC means Normally Closed:When the magnet together, the circuit is conductive( light on ); when the magnet separate, the circuit is not conductive ( light off ). When make order,pls check carefully!