10 Pcs Wired Door contact Magnetic Sensor Switch Access Control Magnetic Hotel Doorlock System Matching Resistor

SKU: 23982244948

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10 Pcs Wired Door contact Magnetic Sensor Switch Access Control Magnetic Hotel Doorlock System Matching ResistorNote: please read the following carefully to ensure that the product is what you are looking for. Thank you How to distinguish between Recessed NO Magnetic Window and Recessed NC Magnetic Window The Recessed Magnetic Window is composed of a reed switch and a magnet. 1. The reed switch is normally openNO. When there is no magnet approaching, two small pieces of magnetic reed are disconnected; when the magnet is close, two small pieces of magnetic reed

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