{"title":"Magnetic contact switch (door sensor)","handle":"magnetic-contact-switch-door-sensor","url":"/products/magnetic-contact-switch-door-sensor","description":"A magnetic reed switch encased in an ABS plastic shell, commonly used to detect when a door, window, or drawer is opened. The switch half contains a normally-open reed contact, and the other half is a magnet. When the magnet is within 13 mm (0.5\"), the reed switch closes, completing the circuit.\n\nKey Features\n\n\nNormally Open – Closes when the magnet is within 13 mm\n\nABS Plastic Housing – Durable enclosure for both halves\n\nMounting Tabs – Screw holes for secure installation\n\nTwo-Wire Connection – Simple integration with any microcontroller or alarm system\n\n\nIdeal For\n\nDoor and window open/close detection\nDrawer and cabinet monitoring\nSecurity and alarm systems\nHome automation triggers\n\n\n\nTip: Double-sided foam tape from a hardware store works well for mounting without screws.\n\n\nPackage Contents\n\n1× Reed switch half (with wires)\n1× Magnet half\nMounting screws\n","vendor":"Adafruit","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":12048,"title":"Default Title","sku":"AF-375","price":4.88,"on_sale":false,"in_stock":true,"available_quantity":100,"option1":"Default Title"}]}