Kitronik Educational Alarm Project Kit

Description

The Kitronik Alarm Project Kit can be used to make a shed or room alarm when mounted on the top of a door, drawers, or any other object with a moveable opening. It can also be used by replacing the micro switch with a magnetic door contact for enhanced security. This educational kit features a micro switch acting as a trigger mechanism that is armed or disarmed by a separate sliding switch.

The door’s movement is detected by a micro switch mounted onto a door or object with a lid. The system includes an entry delay timer for disarming and a timer that silences the alarm after two minutes, both implemented via a 556 dual timer IC.

The alarm can be further enhanced by using a key switch for arming/disarming or by replacing the micro switch with a magnetic door contact switch to activate it. The components can be placed into a box designed by the student.

Features:

• Can be enhanced with a key switch to arm/disarm
• Can be enhanced by replacing the micro switch with a magnetic door contact switch
• Entry delay for disarming before alarm sounds

Contents:

• 1 x PP3 Battery Clip Lead (Heavy Duty)
• 1 x 4xAA Battery Cage with Clip
• 1 x Miniature DPDT Slide Switch
• 1 x NE556 Dual Timer IC
• 1 x IC Socket 14 Pin
• 1 x Piezo Buzzer (with Drive)
• 4 x Capacitor, Ceramic, 50V, 10nF
• 2 x 100uF Cap Low Leakage
• 3 x 10KΩ Resistor
• 1 x 220KΩ Resistor
• 2 x 1.2MΩ Resistor
• 1 x Micro Switch with Medium Lever
• 1 x Red 5mm Diffused LED – 275mCd
• 1 x 330Ω Resistor
• 1 x Alarm Project Kit PCB

Possible Applications:

• Adding an alarm to a cookie or biscuit tin
• Adding an entry alarm to a door

Dimensions:

• PCB Length: 51mm
• PCB Width: 41.5mm

Requires: 4 x AA Batteries (not included)

Note: This is an educational kit and should not be used to secure anything of value.

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