This 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 movable opening. It can also be used by replacing the micro switch with a magnetic door contact. A micro switch acts as a trigger mechanism and is armed / disarmed by a seperate sliding switch. The door's movement is detected by a micro switch mounted onto a door or object with a lid. A timer provides an entry delay during which the system can be disarmed by the slide switch, whilst a separate timer silences the alarm after two minutes. Both of these timers are implemented via a 556 dual timer IC. The alarm can be further enhanced by using a simple key switch for arming / disarming or by replacing the micro switch with a magnetic door contact switch to activate it. The board, battery pack & buzzer 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. 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 include: * Adding an alarm to a cookie/biscuit tin. * Adding an entry alarm to a door. Dimensions: * PCB Length: 51mm. * PCB Width: 41.5mm. Requires: * 4 x AA Batteries. Resources: * Click here to download the essential information. * Click here to download the full teaching resources. Note: This is an educational kit and should not be used to secure anything of value. This product is designed and manufactured in the UK by Kitronik. https://elecena.pl/product/27744134/kitronik-alarm-project-kit 2025-01-23 https://elecena.pl/product/27744134/kitronik-alarm-project-kit 2025-10-01 https://elecena.pl/product/27744134/kitronik-alarm-project-kit 2026-02-21 https://elecena.pl/product/27744134/kitronik-alarm-project-kit 2026-02-23 https://elecena.pl/product/27744134/kitronik-alarm-project-kit 2026-03-19 https://elecena.pl/product/27744134/kitronik-alarm-project-kit 2026-03-26 https://elecena.pl/product/27744134/kitronik-alarm-project-kit 2026-03-28 https://elecena.pl/product/27744134/kitronik-alarm-project-kit 2026-04-12 https://elecena.pl/product/27744134/kitronik-alarm-project-kit 2026-05-22