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Alarm Project Kit

Product Code: K1001
Excl. VAT: £5.04 Incl. VAT: £6.05
  • Buy 5 for £4.73 (£5.68 incl. tax) each and save 7%
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The kit can be used to make a shed or room alarm. It is armed / disarmed by a hidden switch.

The alarm can be further enhanced by using a simple key switch for arming / disarming or by adding a magnetic door contact to activate it. The board, battery pack & buzzer can be placed into a box designed by the student.


  • 1 x PP3 clip lead 
  • 1 x 4AA battery holder 
  • 1 x slide switch 
  • 1 x 556 (dual 555) timer IC 
  • 1 x 14 pin IC holder 
  • 1 x Piezo buzzer 
  • 4 x 10nF capacitor, ceramic 
  • 2 x 100uF capacitor, electrolytic 
  • 1 x 330ohm resistor 
  • 3 x 10Kohm resistors 
  • 1 x 220Kohm resistor 
  • 2 x 1.2Mohm resistors 
  • 1 x micro switch 
  • 1 x 5mm red LED 
  • 0.5m connecting wire 
  • 1 x Alarm PCB

Kit contents: Alarms are detected by a micro switch mounted onto a door. A timer provides an entry delay during which the system can be disarmed, whilst a separate timer silences the alarm after two minutes. Both of these timers are implemented via a 555 timer IC.

  • PSB dimensions: 51mm x 41.5mm.
  • Requires x4 AA batteries, available separately.

Whenever possible, items which are in stock are dispatched the same day, or the next working day.

Large and/or heavy items are dispatched by UPS courier service and these orders must be placed before 15:00hrs (GMT) to ensure same day dispatch.

Small items are normally sent using a Royal Mail service for UK orders, and International Airmail or UPS for overseas orders

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Alarm Project Kit

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