expandable transistor based burglar alarm


Posted on Feb 5, 2014

This transistor based alarm features automatic Exit and Entry delays - together with a timed Bell Cut-off and system Reset. Along with the Exit/Entry zone - the basic alarm board has one Instant Zone. This will be adequate in many situations. However - the modular design means that it`s easy to add as many zones as you like to the system. Details of a Four-Zone expansion module are provided..


expandable transistor based burglar alarm
Click here to download the full size of the above Circuit.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    FingerPrint Security circuit
    Simple Li-Ion Battery Charger
    Phone-recorder
    Adjustable Regulated Power Supply 0-15V
    3GPP FDD User Equipment Receiver Test
    quick jobs h bridge circuit to drive
    expecorner
    GenesisRadio Transceivers
    12 Volt 20 Amp Power Supply
    Press light switch double circuit 4



    Top