Door Alarm

This is a great and easy project to do for starters and experts

You will need a -screw driver
-NC or NO reed switch
-9 volt battery
-9 volt battery clip
-3 jumper wires
-active buzzer
-breadboard

Put the active buzzer on the breadboard

Connect the positive pin of the buzzer to com on the reed switch

Connect the negative pin in the buzzer to the negative rail on the breadboard.

Connect the positive rail on the breadboard to N/C or N/O depends if you want the buzzer to buzz when the door opens if so connect to N/C, if you want the buzzer to buzz when the door is closed connect to N/O.

Now connect the battery clip to the positive and negative rail on the breadboard then plug in the battery and test. You. Can mount this to a door I used blue tack but you can use whatever. If you liked this please like it and also if you need some active buzzers I have some on this link right below.

Active buzzers- http://www.ebay.com.au/itm/182557930221?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649