Alarm system

268

04:00:17

Can replace Led with a Buzzer. by dkristal

published 8 years ago

BillyT

8 years ago

Nice circuit and basically correct, love the NO & NC options. However the time base needed to be checked for real time operations, as such the timing capacitor has been increased to allow for this. The output resistors have also been adjusted to suit the LED load, these may have to be changed to suit a buzzer or relay output circuit. http://everycircuit.com/circuit/4773824041320448

hurz

8 years ago

Alarm system which can be stoppt by the intruder? Useless

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