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REED SWITCH

DOOR SECURITY MONITOR SWITCHES

Using a magnetic reed switch to the edge of the door and door frame which changes states when the door is opened or closed. This device increases the level of security mainly in industries as it is very important safety feature. This could even be used in our day-to-day lives in our workplaces and homes.

 What is the use of magnetic reed switch in these devices?

The magnetic reed switch is typically installed on the door frame and the magnet that activates the switch is usually installed on the door. The device is introduced to a magnetic field, the two ferrous materials inside the switch come together and the switch closes and circuit is complete, thus the magnetic field is removed, the reeds separate and the switch opens.

MATERIALS REQUIRED

Magnetic Reed Switch

Green LED – Buy

Red LED

Arduino Board – Buy

Two 220ohm Resistor

10K ohm resistor

Breadboard

 

BREADBOARD CONNECTION

 

door-security-module143

 

SCHEMATIC DIAGRAM

 

doorsecurity_schem

 

 

CODE:

How does this device function?

When we expose the reed switch to a magnetic field, the green led glows which signifies that the door is closed. When the magnetic field is reduced, the red led glows (the door is open).