These sensors are typically mounted in mechanical systems.
Reed switch door sensor.
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As soon as the contact is interrupted the transistor no longer switches and a zero is displayed on the gpio.
Reed switches have been used in laptops to put the laptop into sleep hibernation mode when the lid is closed.
Ge sentrol 1125w n 3 8 flush mini magnetic door window contact with wire leads wide gap white.
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However for an application such as a door security sensor the reed switch needs a protective shell housing for handling and mounting.
Practical electronics for inventors by paul monk.
This will allow you to query if a window door is opened or not.
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Reed switches actuated by magnets are commonly used in mechanical systems as proximity sensors.
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A bare reed switch can easily be mounted on circuit boards.
This item roller ball recessed button pressure reed switch window door alarm contact sensor plunger with terminals.
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Examples are door and window sensors in burglar alarm systems and tamperproofing methods.
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Home automation describes a reed switch door sensor hooked up to a raspberry pi.
If you want to wait for the state to change you can use the following function.
Choose from our selection of reed switches including magnetically actuated switches magnetic contact alarm switches and more.
As long as the window and thus also the magnetic switch is closed a 1 is displayed on the pin.