Reed Switch Burglar Alarm Circuit

With just a battery and buzzer these designs make for fairly flawed security systems. Most commonly used method is by using a reed switch which is simply a magnetic door alarm circuit. In this diy project i will show you how to design a simple arduino based door monitoring system using reed switch.

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These are used to secure an alarm circuit on a door or window.

Reed switch burglar alarm circuit. They have powerful magnets with self adhesive or screw mount and screw terminal connections. The button is embedded in the door frame so closing the door pushes it in. When somebody opens the door the button is released changing the circuit and sounding the alarm. This alarm circuit constructed by using two familiar.

Whether it is opened or closed. When power is turned on the circuit goes into standby mode and this condition is indicated by security alarm in the lcd screen note that here a n o reedswitch bar magnet combination is used to detect any mishaps and hence the reed switch should be in closed state at standby mode. Auto burglar alarm is an electronic. A reed switch can be said to require zero power to operate it.

Based on the status further actions like making an alarm sending. When this device exposed to the magnetic field then ferrous materials inside reed switch pull together and switch closes. These come in many styles to match the wide variety of doors and windows available but all operate on the same principal. Closed when both units are together ie current flows and open when apart.

It looks like a small tube like device contains two ferrous material leads. A reed switch has very low resistance when closed typically as low as 50 milliohms whereas the hall effect devices can be in the hundreds of ohms. The reed switch can thus be used to activate an alarm circuit whenever a protected door window is opened. Sold as a pair one has a magnet inside the other a reed switch.

Home alarm circuits diy auto burglary alarm circuit diagram using reed switch. Most hardwired alarm systems use a magnetic reed switch on each door and window. Door opening alarm using reed switch a reed switch is an electrical switch activated by a magnetic field. The reed switch is a small device and contains two ferrous materials inside.

Here the reed switch is embedded in a door or window frame and the activating magnet is embedded adjacent to it in the actual door or window so that the reed switch changes state whenever the door window is opened or closed. An electrical circuit is closed when a magnet is near the switch indicating the opening is shut. A reed switch requires only two wires whereas most solid state devices require three wires. Diy auto burglary alarm circuit diagram using reed switch leave a reply security alarms for your home car and other properties is needed to protect and boost your property investment and a value for your insurance security.

By the way this element reacts as a non contact switch in a circuit and also it can carry upto 1 2a current. Another simple burglar alarm uses a small button as the switch. When there is no magnetic field then ferrous materials separate and switch open. A door monitoring system is a simple application which continuously monitors the status of the door i e.