Magnetic Door Sensor Circuit Diagram

If you want to protect some door from unwanted access then you can use this simple door open alarm circuit using reed switch.

Magnetic door sensor circuit diagram.

The circuit will also require a small size of permanent magnet to be fitted on the corner of the door in front of the reed switch that will be placed at the boarder of the door. Frequency of tone can be adjustable by using an attached rv1 potentiometer. Fix the hall sensor hs1 at the corner of door frame and the magnet on the door keeping its south pole s oriented towards the marked side of hs1. Collection of magnetic door lock wiring diagram.

Assemble the circuit on a small pcb and enclose in a suitable box. Circuit diagram construction and working here reed switch acts as a sensor to detect the door position close open. Here we have connected a 1k. In this magnetic door alarm circuit we have used a 555 timer ic in astable mode to generate a tone as an alarm.

Circuit diagram and explanation. When this device exposed to the magnetic field then ferrous materials inside. We have previously interfaced hall sensor with arduino and made few projects using hall sensor. A relay switch is used at the output of the circuit from which you can connect the connection of an ac lamp that you want to open.

The reed switch is a small device and contains two ferrous materials inside.