Item Tag: 10-20mm

  • 1 Set RC-33B NC Magnetic Window Door Contact Alarm Reed Switch Recessed

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    Description: Easy to install and easy to use. Widely used in security window door contact. Recessed mounting, white ABS fireproof plastic shell which has a long life. 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…