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30pcs RC-33 NC Recessed Wired Door Contact Sensor Alarm Magnetic Reed Switch
30pcs RC-33 NC Recessed Wired Door Contact Sensor Alarm Magnetic Reed Switch
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Detail0.5A Maximum Switch Current Will make Sense Door Closer at Roughly 15-25mm This Contact Works with Any Access Control or Burglar Alarm System Available 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 ).
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